html,
body {
    height: 100%;
}

body {
    margin: 0;
    padding: 0;
    background-color: #FFFFFF;
}

.appWrapper {
    position: absolute;
    width: 878px;
    height: 478px;
    background-color: #F8F9F9;
    padding: 10px;
    border: 1px solid rgb(211, 211, 211);
}

.slider-wrapper {
    position: absolute;
    top: 25px;
    left: 30px;
    z-index: 2;
    display: inline-block;
    width: 20px;
    height: 450px;
    padding: 0;
}

.slider-wrapper input {
    width: 450px;
    height: 20px;
    margin: 0;
    transform-origin: 225px 225px;
    transform: rotate(-90deg);
}

.slider {
    -webkit-appearance: none;
    background: #d3d3d3;
    outline: none;
    opacity: 0.7;
    -webkit-transition: .2s;
    transition: opacity .2s;
}

.slider:hover {
    opacity: 1;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 25px;
    height: 25px;
    background: rgb(0, 12, 82);
    cursor: pointer;
    outline: 1px solid yellow;
}

.slider::-moz-range-thumb {
    width: 25px;
    height: 25px;
    background: rgb(0, 12, 82);
    cursor: pointer;
    outline: 1px solid yellow;
}

#game-canvas {
    touch-action: none;
}

#instruction {
    font-size: 18px;
    font-weight: bold;
    font-family: Arial, Helvetica, sans-serif;
    position: absolute;
    top: 460px;
    left: 225px;
}

.screenReader {
    position: absolute;
    left: -10000px;
}