style.css

@import url('https://fonts.googleapis.com/css2?family=Fredoka:wght@700&display=swap');

* {
    box-sizing: border-box;
    margin: 0;
}

body {
    background: #b5ead7;
    font-family: 'Fredoka', sans-serif;
}

#spacebar {
    width: 800px;
    height: 300px;
    position: absolute;
    top: 55%;
    left: 50%;
    border-radius: 30px;
    transform: translate(-50%,-50%);
    text-align: center;
    padding-top: 100px;
    background: white;
    box-shadow: 0 35px 65px 0 rgba(86, 184, 149, 0.42);
    transition: top 0.15s ease-in-out, width 0.15s ease-in-out, height 0.15s ease-in-out, box-shadow 0.15s ease-in-out
}

#spacebar:hover {
    top: 50%;
    width: 840px;
    height: 320px;
    box-shadow: 0 80px 40px 0 rgba(86, 184, 149, 0.42);
    cursor: pointer;
}

#face {
    font-size: 150px;
    line-height: 0.6;
    color: rgba(86, 184, 149, 0.42);
    text-shadow: 0 0 8px rgba(86, 184, 149, 0.42);
    user-select: none;
    transition: font-size 0.15s ease-in-out, line-height 0.15s ease-in-out, text-shadow 0.15s ease-in-out
}

#spacebar:hover > #face {
    line-height: 0.3;
}

.blush {
    color: pink;
    text-shadow: 0 0 40px pink;
    font-size: 100px;
    user-select: none;
}

#outliner {
    margin: 10px;
    padding: 0;
    width: calc(100% + 40px);
    height: calc(100% + 40px);
    position: absolute;
    top: -30px;
    left: -30px;
    z-index: -3;
    background-color: transparent;
    border: 30px solid black;
    border-radius: 30px;
}

.ear {
    padding: 100px;
    width: 30px;
    position: absolute;
    top: -70px;
    z-index: -2;
    background-color: white;
    border: none;
    border-radius: 50%;
    outline: 20px solid black;
    box-shadow: inset 0 -10px 15px 0 rgba(113, 235, 191, 0.8);
}

#left-e {
    left: 150px;
}

#right-e {
    right: 150px;
}

#fur {
    padding: 0;
    width: 100%;
    height: 100%;
    position: absolute;
    bottom: 0;
    z-index: -1;
    background-color: white;
    border: none;
    border-radius: 30px;
    box-shadow: inset 0 -10px 15px 0 rgba(113, 235, 191, 1);
}

#head {
    display: flex;
    flex-flow: row wrap;
}

#left-b {
    margin-left: auto;
}

#right-b {
    margin-right: auto;
}