.button {
    margin: 0.4em;
    padding: 1em;
    cursor: pointer;
    background: #e1e1e1;
    text-decoration: none;
    color: #666;
}

.grow {
    display: inline-block;
    transition-duration: 0.3s;
    transition-property: transform;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.grow:hover,
.grow:focus,
.grow:active {
    transform: scale(1.1);
}

.shrink {
    display: inline-block;
    transition-duration: 0.3s;
    transition-property: transform;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.shrink:hover,
.shrink:focus,
.shrink:active {
    transform: scale(0.9);
}

@keyframes pulse {
    25% {
        transform: scale(1.1);
    }

    75% {
        transform: scale(0.9);
    }
}

.pulse {
    display: inline-block;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.pulse:hover,
.pulse:focus,
.pulse:active {
    animation-name: pulse;
    animation-duration: 1s;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}

@keyframes pulse-grow {
    to {
        transform: scale(1.1);
    }
}

.pulse-grow {
    display: inline-block;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.pulse-grow:hover,
.pulse-grow:focus,
.pulse-grow:active {
    animation-name: pulse-grow;
    animation-duration: 0.3s;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
    animation-direction: alternate;
}

@keyframes pulse-shrink {
    to {
        transform: scale(0.9);
    }
}

.pulse-shrink {
    display: inline-block;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.pulse-shrink:hover,
.pulse-shrink:focus,
.pulse-shrink:active {
    animation-name: pulse-shrink;
    animation-duration: 0.3s;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
    animation-direction: alternate;
}

@keyframes push {
    50% {
        transform: scale(0.8);
    }

    100% {
        transform: scale(1);
    }
}

.push {
    display: inline-block;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.push:hover,
.push:focus,
.push:active {
    animation-name: push;
    animation-duration: 0.3s;
    animation-timing-function: linear;
    animation-iteration-count: 1;
}

@keyframes pop {
    50% {
        transform: scale(1.2);
    }

    100% {
        transform: scale(1);
    }
}

.pop {
    display: inline-block;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.pop:hover,
.pop:focus,
.pop:active {
    animation-name: pop;
    animation-duration: 0.3s;
    animation-timing-function: linear;
    animation-iteration-count: 1;
}

.rotate {
    display: inline-block;
    transition-duration: 0.3s;
    transition-property: transform;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.rotate:hover,
.rotate:focus,
.rotate:active {
    transform: rotate(4deg);
}

.grow-rotate {
    display: inline-block;
    transition-duration: 0.3s;
    transition-property: transform;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.grow-rotate:hover,
.grow-rotate:focus,
.grow-rotate:active {
    transform: scale(1.1) rotate(4deg);
}

.float {
    display: inline-block;
    transition-duration: 0.3s;
    transition-property: transform;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.float:hover,
.float:focus,
.float:active {
    transform: translateY(-5px);
}

.sink {
    display: inline-block;
    transition-duration: 0.3s;
    transition-property: transform;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.sink:hover,
.sink:focus,
.sink:active {
    transform: translateY(5px);
}

@keyframes hover {
    50% {
        transform: translateY(-3px);
    }

    100% {
        transform: translateY(-6px);
    }
}

.hover {
    display: inline-block;
    transition-duration: 0.5s;
    transition-property: transform;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.hover:hover,
.hover:focus,
.hover:active {
    transform: translateY(-6px);
    animation-name: hover;
    animation-duration: 1.5s;
    animation-delay: 0.3s;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
    animation-direction: alternate;
}

@keyframes hang {
    50% {
        transform: translateY(3px);
    }

    100% {
        transform: translateY(6px);
    }
}

.hang {
    display: inline-block;
    transition-duration: 0.5s;
    transition-property: transform;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.hang:hover,
.hang:focus,
.hang:active {
    transform: translateY(6px);
    animation-name: hang;
    animation-duration: 1.5s;
    animation-delay: 0.3s;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
    animation-direction: alternate;
}

.skew {
    display: inline-block;
    transition-duration: 0.3s;
    transition-property: transform;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.skew:hover,
.skew:focus,
.skew:active {
    transform: skew(-10deg);
}

.skew-forward {
    display: inline-block;
    transition-duration: 0.3s;
    transition-property: transform;
    transform-origin: 0 100%;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.skew-forward:hover,
.skew-forward:focus,
.skew-forward:active {
    transform: skew(-10deg);
}

.skew-backward {
    display: inline-block;
    transition-duration: 0.3s;
    transition-property: transform;
    transform-origin: 0 100%;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.skew-backward:hover,
.skew-backward:focus,
.skew-backward:active {
    transform: skew(10deg);
}

@keyframes wobble-vertical {
    16.65% {
        transform: translateY(8px);
    }

    33.3% {
        transform: translateY(-6px);
    }

    49.95% {
        transform: translateY(4px);
    }

    66.6% {
        transform: translateY(-2px);
    }

    83.25% {
        transform: translateY(1px);
    }

    100% {
        transform: translateY(0);
    }
}

.wobble-vertical {
    display: inline-block;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.wobble-vertical:hover,
.wobble-vertical:focus,
.wobble-vertical:active {
    animation-name: wobble-vertical;
    animation-duration: 1s;
    animation-timing-function: ease-in-out;
    animation-iteration-count: 1;
}

@keyframes wobble-horizontal {
    16.65% {
        transform: translateX(8px);
    }

    33.3% {
        transform: translateX(-6px);
    }

    49.95% {
        transform: translateX(4px);
    }

    66.6% {
        transform: translateX(-2px);
    }

    83.25% {
        transform: translateX(1px);
    }

    100% {
        transform: translateX(0);
    }
}

.wobble-horizontal {
    display: inline-block;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.wobble-horizontal:hover,
.wobble-horizontal:focus,
.wobble-horizontal:active {
    animation-name: wobble-horizontal;
    animation-duration: 1s;
    animation-timing-function: ease-in-out;
    animation-iteration-count: 1;
}

@keyframes wobble-to-bottom-right {
    16.65% {
        transform: translate(8px, 8px);
    }

    33.3% {
        transform: translate(-6px, -6px);
    }

    49.95% {
        transform: translate(4px, 4px);
    }

    66.6% {
        transform: translate(-2px, -2px);
    }

    83.25% {
        transform: translate(1px, 1px);
    }

    100% {
        transform: translate(0, 0);
    }
}

.wobble-to-bottom-right {
    display: inline-block;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.wobble-to-bottom-right:hover,
.wobble-to-bottom-right:focus,
.wobble-to-bottom-right:active {
    animation-name: wobble-to-bottom-right;
    animation-duration: 1s;
    animation-timing-function: ease-in-out;
    animation-iteration-count: 1;
}

@keyframes wobble-to-top-right {
    16.65% {
        transform: translate(8px, -8px);
    }

    33.3% {
        transform: translate(-6px, 6px);
    }

    49.95% {
        transform: translate(4px, -4px);
    }

    66.6% {
        transform: translate(-2px, 2px);
    }

    83.25% {
        transform: translate(1px, -1px);
    }

    100% {
        transform: translate(0, 0);
    }
}

.wobble-to-top-right {
    display: inline-block;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.wobble-to-top-right:hover,
.wobble-to-top-right:focus,
.wobble-to-top-right:active {
    animation-name: wobble-to-top-right;
    animation-duration: 1s;
    animation-timing-function: ease-in-out;
    animation-iteration-count: 1;
}

@keyframes wobble-top {
    16.65% {
        transform: skew(-12deg);
    }

    33.3% {
        transform: skew(10deg);
    }

    49.95% {
        transform: skew(-6deg);
    }

    66.6% {
        transform: skew(4deg);
    }

    83.25% {
        transform: skew(-2deg);
    }

    100% {
        transform: skew(0);
    }
}

.wobble-top {
    display: inline-block;
    transform-origin: 0 100%;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.wobble-top:hover,
.wobble-top:focus,
.wobble-top:active {
    animation-name: wobble-top;
    animation-duration: 1s;
    animation-timing-function: ease-in-out;
    animation-iteration-count: 1;
}

@keyframes wobble-bottom {
    16.65% {
        transform: skew(-12deg);
    }

    33.3% {
        transform: skew(10deg);
    }

    49.95% {
        transform: skew(-6deg);
    }

    66.6% {
        transform: skew(4deg);
    }

    83.25% {
        transform: skew(-2deg);
    }

    100% {
        transform: skew(0);
    }
}

.wobble-bottom {
    display: inline-block;
    transform-origin: 100% 0;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.wobble-bottom:hover,
.wobble-bottom:focus,
.wobble-bottom:active {
    animation-name: wobble-bottom;
    animation-duration: 1s;
    animation-timing-function: ease-in-out;
    animation-iteration-count: 1;
}

@keyframes wobble-skew {
    16.65% {
        transform: skew(-12deg);
    }

    33.3% {
        transform: skew(10deg);
    }

    49.95% {
        transform: skew(-6deg);
    }

    66.6% {
        transform: skew(4deg);
    }

    83.25% {
        transform: skew(-2deg);
    }

    100% {
        transform: skew(0);
    }
}

.wobble-skew {
    display: inline-block;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.wobble-skew:hover,
.wobble-skew:focus,
.wobble-skew:active {
    animation-name: wobble-skew;
    animation-duration: 1s;
    animation-timing-function: ease-in-out;
    animation-iteration-count: 1;
}

@keyframes buzz {
    50% {
        transform: translateX(3px) rotate(2deg);
    }

    100% {
        transform: translateX(-3px) rotate(-2deg);
    }
}

.buzz {
    display: inline-block;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.buzz:hover,
.buzz:focus,
.buzz:active {
    animation-name: buzz;
    animation-duration: 0.15s;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}

@keyframes buzz-out {
    10% {
        transform: translateX(3px) rotate(2deg);
    }

    20% {
        transform: translateX(-3px) rotate(-2deg);
    }

    30% {
        transform: translateX(3px) rotate(2deg);
    }

    40% {
        transform: translateX(-3px) rotate(-2deg);
    }

    50% {
        transform: translateX(2px) rotate(1deg);
    }

    60% {
        transform: translateX(-2px) rotate(-1deg);
    }

    70% {
        transform: translateX(2px) rotate(1deg);
    }

    80% {
        transform: translateX(-2px) rotate(-1deg);
    }

    90% {
        transform: translateX(1px) rotate(0);
    }

    100% {
        transform: translateX(-1px) rotate(0);
    }
}

.buzz-out {
    display: inline-block;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.buzz-out:hover,
.buzz-out:focus,
.buzz-out:active {
    animation-name: buzz-out;
    animation-duration: 0.75s;
    animation-timing-function: linear;
    animation-iteration-count: 1;
}

.border-fade {
    display: inline-block;
    transition-duration: 0.3s;
    transition-property: box-shadow;
    transform: translateZ(0);
    box-shadow: 0 0 0 4px #e1e1e1 inset, 0 0 1px rgb(0, 0, 0, 0);
}

.border-fade:hover,
.border-fade:focus,
.border-fade:active {
    box-shadow: 0 0 0 4px #666666 inset, 0 0 1px rgb(0, 0, 0, 0);
}

.hollow {
    display: inline-block;
    transition-duration: 0.3s;
    transition-property: background;
    transform: translateZ(0);
    box-shadow: 0 0 0 4px #e1e1e1 inset, 0 0 1px rgb(0, 0, 0, 0);
}

.hollow:hover,
.hollow:focus,
.hollow:active {
    background: none;
}

.trim {
    display: inline-block;
    position: relative;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.trim:before {
    content: '';
    position: absolute;
    border: #fff solid 4px;
    top: 4px;
    left: 4px;
    right: 4px;
    bottom: 4px;
    opacity: 0;
    transition-duration: 0.3s;
    transition-property: opacity;
}

.trim:hover:before,
.trim:focus:before,
.trim:active:before {
    opacity: 1;
}

.outline-outward {
    display: inline-block;
    position: relative;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.outline-outward:before {
    content: '';
    position: absolute;
    border: #e1e1e1 solid 4px;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    transition-duration: 0.3s;
    transition-property: top, right, bottom, left;
}

.outline-outward:hover:before,
.outline-outward:focus:before,
.outline-outward:active:before {
    top: -8px;
    right: -8px;
    bottom: -8px;
    left: -8px;
}

.outline-inward {
    display: inline-block;
    position: relative;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.outline-inward:before {
    pointer-events: none;
    content: '';
    position: absolute;
    border: #e1e1e1 solid 4px;
    top: -16px;
    right: -16px;
    bottom: -16px;
    left: -16px;
    opacity: 0;
    transition-duration: 0.3s;
    transition-property: top, right, bottom, left;
}

.outline-inward:hover:before,
.outline-inward:focus:before,
.outline-inward:active:before {
    top: -8px;
    right: -8px;
    bottom: -8px;
    left: -8px;
    opacity: 1;
}

.round-corners {
    display: inline-block;
    transition-duration: 0.3s;
    transition-property: border-radius;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.round-corners:hover,
.round-corners:focus,
.round-corners:active {
    border-radius: 1em;
}

.glow {
    display: inline-block;
    transition-duration: 0.3s;
    transition-property: box-shadow;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.glow:hover,
.glow:focus,
.glow:active {
    box-shadow: 0 0 8px rgb(0, 0, 0, 0.6);
}

.box-shadow-outset {
    display: inline-block;
    transition-duration: 0.3s;
    transition-property: box-shadow;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.box-shadow-outset:hover,
.box-shadow-outset:focus,
.box-shadow-outset:active {
    box-shadow: 2px 2px 2px rgb(0, 0, 0, 0.6);
}

.box-shadow-inset {
    display: inline-block;
    transition-duration: 0.3s;
    transition-property: box-shadow;
    box-shadow: 0 0 0 rgb(0, 0, 0, 0.6) inset, 0 0 1px rgb(0, 0, 0, 0);
    transform: translateZ(0);
}

.box-shadow-inset:hover,
.box-shadow-inset:focus,
.box-shadow-inset:active {
    box-shadow: 2px 2px 2px rgb(0, 0, 0, 0.6) inset, 0 0 1px rgb(0, 0, 0, 0);
}

.float-shadow {
    display: inline-block;
    position: relative;
    transition-duration: 0.3s;
    transition-property: transform;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.float-shadow:before {
    pointer-events: none;
    position: absolute;
    z-index: -1;
    content: '';
    top: 100%;
    left: 5%;
    height: 10px;
    width: 90%;
    opacity: 0;
    background: radial-gradient(ellipse at center, rgb(0, 0, 0, 0.35) 0%, rgb(0, 0, 0, 0) 80%);
    transition-duration: 0.3s;
    transition-property: transform, opacity;
}

.float-shadow:hover,
.float-shadow:focus,
.float-shadow:active {
    transform: translateY(-5px);
}

.float-shadow:hover:before,
.float-shadow:focus:before,
.float-shadow:active:before {
    opacity: 1;
    transform: translateY(5px);
}

@keyframes hover {
    50% {
        transform: translateY(-3px);
    }

    100% {
        transform: translateY(-6px);
    }
}

@keyframes hover-shadow {
    0% {
        transform: translateY(6px);
        opacity: 0.4;
    }

    50% {
        transform: translateY(3px);
        opacity: 1;
    }

    100% {
        transform: translateY(6px);
        opacity: 0.4;
    }
}

.hover-shadow {
    display: inline-block;
    position: relative;
    transition-duration: 0.3s;
    transition-property: transform;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.hover-shadow:before {
    pointer-events: none;
    position: absolute;
    z-index: -1;
    content: '';
    top: 100%;
    left: 5%;
    height: 10px;
    width: 90%;
    opacity: 0;
    background: radial-gradient(ellipse at center, rgb(0, 0, 0, 0.35) 0%, rgb(0, 0, 0, 0) 80%);
    transition-duration: 0.3s;
    transition-property: transform, opacity;
}

.hover-shadow:hover,
.hover-shadow:focus,
.hover-shadow:active {
    transform: translateY(-6px);
    animation-name: hover;
    animation-duration: 1.5s;
    animation-delay: 0.3s;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
    animation-direction: alternate;
}

.hover-shadow:hover:before,
.hover-shadow:focus:before,
.hover-shadow:active:before {
    opacity: 0.4;
    transform: translateY(6px);
    animation-name: hover-shadow;
    animation-duration: 1.5s;
    animation-delay: 0.3s;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
    animation-direction: alternate;
}

.shadow-radial {
    display: inline-block;
    position: relative;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.shadow-radial:before,
.shadow-radial:after {
    pointer-events: none;
    position: absolute;
    content: '';
    left: 0;
    width: 100%;
    box-sizing: border-box;
    background-repeat: no-repeat;
    height: 5px;
    opacity: 0;
    transition-duration: 0.3s;
    transition-property: opacity;
}

.shadow-radial:before {
    bottom: 100%;
    background: radial-gradient(ellipse at 50% 150%, rgb(0, 0, 0, 0.6) 0%, rgb(0, 0, 0, 0) 80%);
}

.shadow-radial:after {
    top: 100%;
    background: radial-gradient(ellipse at 50% -50%, rgb(0, 0, 0, 0.6) 0%, rgb(0, 0, 0, 0) 80%);
}

.shadow-radial:hover:before,
.shadow-radial:focus:before,
.shadow-radial:active:before,
.shadow-radial:hover:after,
.shadow-radial:focus:after,
.shadow-radial:active:after {
    opacity: 1;
}

.bubble-top {
    display: inline-block;
    position: relative;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.bubble-top:before {
    pointer-events: none;
    position: absolute;
    z-index: -1;
    content: '';
    border-style: solid;
    transition-duration: 0.3s;
    transition-property: top;
    left: calc(50% - 10px);
    top: 0;
    border-width: 0 10px 10px;
    border-color: transparent transparent #e1e1e1;
}

.bubble-top:hover:before,
.bubble-top:focus:before,
.bubble-top:active:before {
    top: -10px;
}

.bubble-right {
    display: inline-block;
    position: relative;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.bubble-right:before {
    pointer-events: none;
    position: absolute;
    z-index: -1;
    content: '';
    border-style: solid;
    transition-duration: 0.3s;
    transition-property: right;
    top: calc(50% - 10px);
    right: 0;
    border-width: 10px 0 10px 10px;
    border-color: transparent transparent transparent #e1e1e1;
}

.bubble-right:hover:before,
.bubble-right:focus:before,
.bubble-right:active:before {
    right: -10px;
}

.bubble-bottom {
    display: inline-block;
    position: relative;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.bubble-bottom:before {
    pointer-events: none;
    position: absolute;
    z-index: -1;
    content: '';
    border-style: solid;
    transition-duration: 0.3s;
    transition-property: bottom;
    left: calc(50% - 10px);
    bottom: 0;
    border-width: 10px 10px 0;
    border-color: #e1e1e1 transparent transparent;
}

.bubble-bottom:hover:before,
.bubble-bottom:focus:before,
.bubble-bottom:active:before {
    bottom: -10px;
}

.bubble-left {
    display: inline-block;
    position: relative;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.bubble-left:before {
    pointer-events: none;
    position: absolute;
    z-index: -1;
    content: '';
    border-style: solid;
    transition-duration: 0.3s;
    transition-property: left;
    top: calc(50% - 10px);
    left: 0;
    border-width: 10px 10px 10px 0;
    border-color: transparent #e1e1e1 transparent transparent;
}

.bubble-left:hover:before,
.bubble-left:focus:before,
.bubble-left:active:before {
    left: -10px;
}

.bubble-float-top {
    display: inline-block;
    position: relative;
    transition-duration: 0.3s;
    transition-property: transform;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.bubble-float-top:before {
    position: absolute;
    z-index: -1;
    content: '';
    left: calc(50% - 10px);
    top: 0;
    border-style: solid;
    border-width: 0 10px 10px;
    border-color: transparent transparent #e1e1e1;
    transition-duration: 0.3s;
    transition-property: top;
}

.bubble-float-top:hover,
.bubble-float-top:focus,
.bubble-float-top:active {
    transform: translateY(5px) translateZ(0);
}

.bubble-float-top:hover:before,
.bubble-float-top:focus:before,
.bubble-float-top:active:before {
    top: -10px;
}

.bubble-float-right {
    display: inline-block;
    position: relative;
    transition-duration: 0.3s;
    transition-property: transform;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.bubble-float-right:before {
    position: absolute;
    z-index: -1;
    top: calc(50% - 10px);
    right: 0;
    content: '';
    border-style: solid;
    border-width: 10px 0 10px 10px;
    border-color: transparent transparent transparent #e1e1e1;
    transition-duration: 0.3s;
    transition-property: right;
}

.bubble-float-right:hover,
.bubble-float-right:focus,
.bubble-float-right:active {
    transform: translateX(-5px);
}

.bubble-float-right:hover:before,
.bubble-float-right:focus:before,
.bubble-float-right:active:before {
    right: -10px;
}

.bubble-float-bottom {
    display: inline-block;
    position: relative;
    transition-duration: 0.3s;
    transition-property: transform;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.bubble-float-bottom:before {
    position: absolute;
    z-index: -1;
    content: '';
    left: calc(50% - 10px);
    bottom: 0;
    border-style: solid;
    border-width: 10px 10px 0;
    border-color: #e1e1e1 transparent transparent;
    transition-duration: 0.3s;
    transition-property: bottom;
}

.bubble-float-bottom:hover,
.bubble-float-bottom:focus,
.bubble-float-bottom:active {
    transform: translateY(-5px) translateZ(0);
}

.bubble-float-bottom:hover:before,
.bubble-float-bottom:focus:before,
.bubble-float-bottom:active:before {
    bottom: -10px;
}

.bubble-float-left {
    display: inline-block;
    position: relative;
    transition-duration: 0.3s;
    transition-property: transform;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.bubble-float-left:before {
    position: absolute;
    z-index: -1;
    content: '';
    top: calc(50% - 10px);
    left: 0;
    border-style: solid;
    border-width: 10px 10px 10px 0;
    border-color: transparent #e1e1e1 transparent transparent;
    transition-duration: 0.3s;
    transition-property: left;
}

.bubble-float-left:hover,
.bubble-float-left:focus,
.bubble-float-left:active {
    transform: translateX(5px);
}

.bubble-float-left:hover:before,
.bubble-float-left:focus:before,
.bubble-float-left:active:before {
    left: -10px;
}

.curl-top-left {
    display: inline-block;
    position: relative;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.curl-top-left:before {
    pointer-events: none;
    position: absolute;
    content: '';
    height: 0;
    width: 0;
    top: 0;
    left: 0;
    background: #fff;
    background: linear-gradient(135deg, white 45%, #aaa 50%, #ccc 56%, white 80%);
    z-index: 1000;
    box-shadow: 1px 1px 1px rgb(0, 0, 0, 0.4);
    transition-duration: 0.3s;
    transition-property: width, height;
}

.curl-top-left:hover:before,
.curl-top-left:focus:before,
.curl-top-left:active:before {
    width: 25px;
    height: 25px;
}

.curl-top-right {
    display: inline-block;
    position: relative;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.curl-top-right:before {
    pointer-events: none;
    position: absolute;
    content: '';
    height: 0;
    width: 0;
    top: 0;
    right: 0;
    background: #fff;
    background: linear-gradient(225deg, white 45%, #aaa 50%, #ccc 56%, white 80%);
    box-shadow: -1px 1px 1px rgb(0, 0, 0, 0.4);
    transition-duration: 0.3s;
    transition-property: width, height;
}

.curl-top-right:hover:before,
.curl-top-right:focus:before,
.curl-top-right:active:before {
    width: 25px;
    height: 25px;
}

.curl-bottom-right {
    display: inline-block;
    position: relative;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.curl-bottom-right:before {
    pointer-events: none;
    position: absolute;
    content: '';
    height: 0;
    width: 0;
    bottom: 0;
    right: 0;
    background: #fff;
    background: linear-gradient(315deg, white 45%, #aaa 50%, #ccc 56%, white 80%);
    box-shadow: -1px -1px 1px rgb(0, 0, 0, 0.4);
    transition-duration: 0.3s;
    transition-property: width, height;
}

.curl-bottom-right:hover:before,
.curl-bottom-right:focus:before,
.curl-bottom-right:active:before {
    width: 25px;
    height: 25px;
}

.curl-bottom-left {
    display: inline-block;
    position: relative;
    transform: translateZ(0);
    box-shadow: 0 0 1px rgb(0, 0, 0, 0);
}

.curl-bottom-left:before {
    pointer-events: none;
    position: absolute;
    content: '';
    height: 0;
    width: 0;
    bottom: 0;
    left: 0;
    background: #fff;
    background: linear-gradient(45deg, white 45%, #aaa 50%, #ccc 56%, white 80%);
    box-shadow: 1px -1px 1px rgb(0, 0, 0, 0.4);
    transition-duration: 0.3s;
    transition-property: width, height;
}

.curl-bottom-left:hover:before,
.curl-bottom-left:focus:before,
.curl-bottom-left:active:before {
    width: 25px;
    height: 25px;
}