* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    overflow-x: scroll;
    overflow-y: hidden;
    width: 100vw;
    height: 100vh;
    display: flex;
    float: left;
    position: relative;
}
#animation_container {
    width: 100%;
    height: auto;
    align-items: center;
    text-align: center;
    margin: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}