<button class="button">
    <div class="paper left"></div>
    <div class="paper middle"></div>
    <div class="paper right"></div>
    <div class="inner">
        <div class="zipper">
            <div class="line"></div>
            <div class="gradient"></div>
        </div>
        <span>Compress files</span>
        <svg viewBox="0 0 20 16">
            <polyline points="3 8.75 7.75 13.5 17 2.5"></polyline>
        </svg>
    </div>
</button>

<!-- dribbble - twitter -->
<a class="dribbble" href="https://dribbble.com/ai" 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 {
    --button-width: 152px;
    --background: #404660;
    --background-transparent: #{rgba(#404660, 0)};
    --background-hover: #3A4059;
    --background-back: #1E2235;
    --shadow: #{rgba(#00093D, .125)};
    --text: #F6F8FF;
    --paper: #F6F8FF;
    --paper-lines: #D1D6EE;
    --paper-shadow: #{rgba(#00093D, .15)};
    --zipper: #BBC1E1;
    --zipper-end: #D1D6EE;
    --zipper-line: #8A91B4;
    --zipper-lines: #646B8C;
    --tick: #F6F8FF;
    display: flex;
    outline: none;
    cursor: pointer;
    text-align: center;
    border: 0;
    padding: 0;
    line-height: 24px;
    font-family: inherit;
    font-weight: 600;
    font-size: 14px;
    border-radius: 3px;
    color: var(--text);
    background: var(--background-back);
    transition: transform .3s;
    transform: scale(var(--scale, 1)) translateZ(0);
    -webkit-appearance: none;
    -webkit-tap-highlight-color: transparent;
    &:not(.compress) {
        &:active {
            --scale: .95;
        }
        &:hover {
            --b: var(--background-hover);
        }
    }
    .paper {
        width: 26px;
        height: 32px;
        pointer-events: none;
        position: absolute;
        top: -2px;
        left: var(--left, 50%);
        margin: 0 0 0 -13px;
        background: var(--paper);
        border-radius: 3px;
        box-shadow: 0 1px 1px var(--paper-shadow);
        opacity: 0;
        transform: translate(var(--x, 0), var(--y, -68px));
        &:before {
            content: '';
            position: absolute;
            left: 4px;
            top: 6px;
            width: 18px;
            height: 2px;
            border-radius: 1px;
            background: var(--paper-lines);
            box-shadow: 0 6px 0 var(--paper-lines), 0 12px 0 var(--paper-lines),  0 18px 0 var(--paper-lines);
        }
        &.left {
            --left: 25%;
            --x: -12px;
            --y: -52px;
        }
        &.right {
            --left: 75%;
            --x: 12px;
            --y: -52px;
        }
    }
    .inner {
        position: relative;
        z-index: 1;
        padding: 10px 0;
        width: var(--button-width);
        border-radius: 3px;
        color: var(--text);
        transform-origin: 50% 100%;
        background: var(--b, var(--background));
        box-shadow: 0 1px 2px var(--shadow), 0 4px 7px var(--shadow);
        transition: background .4s;
        span {
            display: block;
            opacity: var(--span-o, 1);
            transform: translateY(var(--span-y, 0)) translateZ(0);
            transition: transform .3s ease var(--span-de, .5s), opacity .3s linear var(--span-de, .5s);
        }
        svg {
            width: 20px;
            height: 16px;
            display: block;
            position: absolute;
            top: 14px;
            left: calc(var(--button-width) / 2);
            margin-left: -10px;
            fill: none;
            stroke-width: 2px;
            stroke-linecap: round;
            stroke-linejoin: round;
            stroke: var(--tick);
            opacity: var(--tick-o, 0);
            transform: scale(var(--tick-s, .5));
            transition: transform .4s ease var(--tick-de, 0s), opacity .3s linear var(--tick-de, 0s);
        }
        .zipper {
            width: calc(var(--button-width) + 12px);
            position: absolute;
            top: 4px;
            left: 0;
            height: 12px;
            overflow: hidden;
            opacity: 0;
            &:before,
            &:after {
                content: '';
                position: absolute;
                top: var(--top, 1px);
                left: var(--left, 1px);
                height: 3px;
                width: 2px;
                border-radius: 1px;
                box-shadow: 5px 0 0 var(--zipper-lines), 10px 0 0 var(--zipper-lines), 15px 0 0 var(--zipper-lines), 20px 0 0 var(--zipper-lines), 25px 0 0 var(--zipper-lines), 30px 0 0 var(--zipper-lines), 35px 0 0 var(--zipper-lines), 40px 0 0 var(--zipper-lines), 45px 0 0 var(--zipper-lines), 50px 0 0 var(--zipper-lines), 55px 0 0 var(--zipper-lines), 60px 0 0 var(--zipper-lines), 65px 0 0 var(--zipper-lines), 70px 0 0 var(--zipper-lines), 75px 0 0 var(--zipper-lines), 80px 0 0 var(--zipper-lines), 85px 0 0 var(--zipper-lines), 90px 0 0 var(--zipper-lines), 95px 0 0 var(--zipper-lines), 100px 0 0 var(--zipper-lines), 105px 0 0 var(--zipper-lines), 110px 0 0 var(--zipper-lines), 115px 0 0 var(--zipper-lines), 120px 0 0 var(--zipper-lines), 125px 0 0 var(--zipper-lines), 130px 0 0 var(--zipper-lines), 135px 0 0 var(--zipper-lines), 140px 0 0 var(--zipper-lines), 145px 0 0 var(--zipper-lines);
                background: var(--zipper-lines);
            }
            &:after {
                --top: 8px;
                --left: 3px;
            }
            .gradient {
                position: absolute;
                top: 0;
                bottom: 0;
                width: 200%;
                right: 12px;
                z-index: 1;
                background: linear-gradient(to right, var(--background-transparent) 0%, var(--background-transparent) 33.33%, var(--background) 66.66%, var(--background) 100%);
                background-size: 300% 100%;
                background-position-x: var(--gradient, 100%);
                transition: background-position var(--gradient-d, 0s) ease var(--gradient-de, 0s);
            }
            .line {
                width: calc(var(--button-width) + 12);
                height: 2px;
                margin: 5px 0;
                position: relative;
                left: -12px;
                z-index: 2;
                background: var(--zipper-line);
                transform: translateX(calc(calc(var(--button-width) * -1) + 8px));
                &:before,
                &:after {
                    content: '';
                    position: absolute;
                    right: var(--right, 0);
                    width: var(--width, 6px);
                    height: var(--height, 2px);
                    border-radius: 1px;
                }
                &:before {
                    background: var(--zipper-end);
                }
                &:after {
                    --right: -7px;
                    --width: 8px;
                    --height: 8px;
                    transform: translate(0, -3px) scaleY(.6) rotate(-45deg);
                    clip-path: polygon(0 0, 100% 0, 0 100%);
                    background: var(--zipper);
                }
            }
        }
    }
    &.compress {
        --span-o: 0;
        --span-y: 8px;
        --span-de: 0s;
        --tick-o: 1;
        --tick-s: 1;
        --tick-de: 3.2s;
        --gradient: 0%;
        --gradient-d: 1.8s;
        --gradient-de: 1.8s;
        .paper {
            animation: paper 1.8s linear forwards;
        }
        .inner {
            animation: fold 1.8s linear forwards;
            .zipper {
                animation: zipper 3.5s linear;
                .line {
                    animation: line 1.2s linear forwards 1.8s;
                }
            }
        }
    }
}

@keyframes paper {
    10%,
    100% {
        opacity: 1;
    }
    0%,
    5% {
        transform: translate(var(--x, 0), var(--y, -68px));
    }
    30% {
        transform: translate(0, 1px);
    }
    50%,
    70% {
        transform: translate(0, -3px);
    }
    95%,
    100% {
        transform: translate(0, 4px);
    }
}

@keyframes line {
    60% {
        transform: translateX(5px);
    }
    80% {
        transform: translateX(-2px);
    }
    100% {
        transform: translateX(0);
    }
}

@keyframes fold {
    10%,
    80% {
        transform: perspective(500px) rotateX(-20deg) translateZ(16px);
    }
}

@keyframes zipper {
    20%,
    90% {
        opacity: 1;
    }
}

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: 'Inter', Arial;
    justify-content: center;
    align-items: center;
    background: #E1E6F9;
    .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;
        }
    }
}
View Compiled
document.querySelectorAll('.button').forEach(button => button.addEventListener('click', e => {
    if(!button.classList.contains('compress')) {

        button.classList.add('compress');

        setTimeout(() => button.classList.remove('compress'), 4000);

    }
    e.preventDefault();
}));

External CSS

  1. https://fonts.googleapis.com/css?family=Inter:400,500,600,700&amp;display=swap

External JavaScript

This Pen doesn't use any external JavaScript resources.