<button class="button">Jumping</button>
<button class="button smoke dark">Smoke</button>
<button class="button drive white">Drive</button>

<!-- dribbble - twitter -->
<a class="dribbble" href="https://dribbble.com/shots/8764233-Button-Hover-Effects-2" target="_blank"><img src="https://cdn.dribbble.com/assets/dribbble-ball-mark-2bd45f09c2fb58dbbfb44766d5d1d07c5a12972d602ef8b32204d28fa3dda554.svg" alt=""></a>
<a class="twitter" target="_blank" href="https://twitter.com/aaroniker_me"><svg xmlns="http://www.w3.org/2000/svg" width="72" height="72" viewBox="0 0 72 72"><path d="M67.812 16.141a26.246 26.246 0 0 1-7.519 2.06 13.134 13.134 0 0 0 5.756-7.244 26.127 26.127 0 0 1-8.313 3.176A13.075 13.075 0 0 0 48.182 10c-7.229 0-13.092 5.861-13.092 13.093 0 1.026.118 2.021.338 2.981-10.885-.548-20.528-5.757-26.987-13.679a13.048 13.048 0 0 0-1.771 6.581c0 4.542 2.312 8.551 5.824 10.898a13.048 13.048 0 0 1-5.93-1.638c-.002.055-.002.11-.002.162 0 6.345 4.513 11.638 10.504 12.84a13.177 13.177 0 0 1-3.449.457c-.846 0-1.667-.078-2.465-.231 1.667 5.2 6.499 8.986 12.23 9.09a26.276 26.276 0 0 1-16.26 5.606A26.21 26.21 0 0 1 4 55.976a37.036 37.036 0 0 0 20.067 5.882c24.083 0 37.251-19.949 37.251-37.249 0-.566-.014-1.134-.039-1.694a26.597 26.597 0 0 0 6.533-6.774z"></path></svg></a>

.button {
    &.dark {
        --background: #2F3545;
        --shadow: 0 2px 8px -1px #{rgba(#151924, .32)};
        --shadow-hover: 0 4px 20px -2px #{rgba(#151924, .5)};
    }
    &.white {
        --background: #fff;
        --text: #275efe;
        --shadow: 0 2px 8px -1px #{rgba(#121621, .04)};
        --shadow-hover: 0 4px 20px -2px #{rgba(#121621, .12)};
    }
}

.button {
    --background: #275efe;
    --text: #fff;
    --font-size: 16px;
    --duration: .5s;
    --move-hover: -4px;
    --shadow: 0 2px 8px -1px #{rgba(#275efe, .32)};
    --shadow-hover: 0 4px 20px -2px #{rgba(#275efe, .5)};
    padding: 16px 32px;
    font-family: 'Roboto';
    font-weight: 500;
    line-height: var(--font-size);
    border-radius: 24px;
    display: block;
    outline: none;
    border: none;
    cursor: pointer;
    text-decoration: none;
    font-size: var(--font-size);
    letter-spacing: .5px;
    background: var(--background);
    color: var(--text);
    box-shadow: var(--shadow);
    transform: translateY(var(--y));
    transition: transform var(--duration) ease, box-shadow var(--duration) ease;
    -webkit-tap-highlight-color: transparent;
    -webkit-appearance: none;
    div {
        display: flex;
        span {
            display: block;
            backface-visibility: hidden;
            font-style: normal;
            $i: 1;
            @while $i < 12 {
                &:nth-child(#{$i}) {
                    --d: #{$i / 20 + s};
                }
                $i: $i + 1;
            }
        }
    }
    &:hover {
        --y: var(--move-hover);
        --shadow: var(--shadow-hover);
        --move: -4px;
        --shadow-active: 0 3px 1px rgba(0, 0, 0, .2);
        span {
            animation: move var(--duration) linear var(--d);
        }
    }
    &.smoke {
        --move: 12px;
        --move-y: -8px;
        --blur: 4px;
        &:hover {
            span {
                --duration: 1s;
                animation: smoke var(--duration) linear var(--d);
            }
        }
    }
    &.drive {
        --move: 16px;
        --skew: 25deg;
        --skew-fast: 40deg;
        --skew-bounce: -12px;
        &:hover {
            span {
                --duration: 1s;
                transform-origin: 50% 100%;
                animation: drive var(--duration) linear var(--d);
            }
        }
    }
}

@keyframes move {
    40% {
        transform: translateY(var(--move));
        text-shadow: var(--shadow-active);
    }
}

@keyframes smoke {
    45%,
    55% {
        filter: blur(var(--blur));
    }
    50%,
    50.1% {
        opacity: 0;
    }
    25%,
    75% {
        transform: translateX(0);
    }
    50% {
        transform: translateX(var(--move)) translateY(var(--move-y));
    }
    50.1% {
        transform: translateX(calc(var(--move) * -1));
    }
}

@keyframes drive {
    40% {
        opacity: 1;
    }
    55% {
        transform: skewX(var(--skew)) translateX(var(--move));
    }
    56% {
        transform: skewX(var(--skew-fast)) translateX(calc(var(--move) * -1));
    }
    55%,
    56% {
        opacity: 0;
    }
    75% {
        transform: skewX(var(--skew));
    }
    85% {
        transform: skewX(var(--skew-bounce));
    }
}

html {
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

* {
    box-sizing: inherit;
    &:before,
    &:after {
        box-sizing: inherit;
    }
}

// Center & dribbble
body {
    min-height: 100vh;
    display: flex;
    font-family: 'Roboto', Arial;
    justify-content: center;
    align-items: center;
    background: #ECEFFC;
    .button {
        margin: 0 12px;
    }
    .dribbble {
        position: fixed;
        display: block;
        right: 20px;
        bottom: 20px;
        img {
            display: block;
            height: 28px;
        }
    }
    .twitter {
        position: fixed;
        display: block;
        right: 64px;
        bottom: 14px;
        svg {
            width: 32px;
            height: 32px;
            fill: #1da1f2;
        }
    }
}

document.querySelectorAll('.button').forEach(button => button.innerHTML = '<div><span>' + button.textContent.trim().split('').join('</span><span>') + '</span></div>');