style.css

h1 {
    text-align: left;
}

body {
    font-family: 'IBM Plex Mono', monospace;
    background-color: black;
    color: white;
    display: flex;
    position: fixed;
    overflow: hidden;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: calc(100% - 40px);
    margin: 0;
    padding-top: 20px;
    padding-bottom: 20px;
}

#canvas {
    border: 1px solid black;
    background-color: black;
}

canvas {
    display: block;
    margin: auto;
}

.container {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.motion_canvas {
    display: flex;
    flex-grow: 1;
    justify-content: center;
    align-content: center;
    max-height: 50%;
}

.controls {
    text-align: right;
    margin-bottom: 2px;
    margin-left: 20px;
    margin-right: 20px;
}

.customButtonOption {
    text-decoration: underline;
    color: white;
    cursor: pointer;
    margin-left: 8px;
}

p {
    margin-left: 20px;
    margin-right: 20px;
    margin-bottom: 2px;
    margin-top: 0px;
}

@media screen and (max-width: 600px) and (orientation: portrait) {
    .controls {
        text-align: center;
    }
    .container {
        justify-content: flex-start;
    }
    body {
        font-size: 13px;
    }
    p {
        text-align: center;
    }
}

input[type=range] {
    -webkit-appearance: none;
    appearance: none;
    height: 2px;
    background: white;
    outline: none;
    opacity: 1;
    transition: opacity .2s;
    margin: 8px 0;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 15px;
    height: 15px;
    background: white;
    cursor: pointer;
    border-radius: 50%;
    margin-top: -6.5px;
}

input[type=range]::-moz-range-thumb {
    width: 15px;
    height: 15px;
    background: white;
    cursor: pointer;
    border-radius: 50%;
}

input[type=range]::-ms-thumb {
    width: 15px;
    height: 15px;
    background: white;
    cursor: pointer;
    border-radius: 50%;
}

input[type=range]::-webkit-slider-runnable-track {
    width: 100%;
    height: 2px;
    background: white;
}

input[type=range]::-moz-range-track {
    width: 100%;
    height: 2px;
    background: white;
}

input[type=range]::-ms-track {
    width: 100%;
    height: 2px;
    background: white;
}

input[type=range]:hover {
    opacity: 1;
}