body {
    margin: 0;
    overflow: hidden;
    font-size: 0;
}

canvas {
    background: black;
    width: 100vw;
    height: 100vh;
}

input {
    width: 250px;
    height: 40px;
    line-height: 40px;
    position: absolute;
    bottom: 35px;
    left: calc(50% - 125px);
    background: none;
    color: white;
    font-size: 30px;
    font-family: arial;
    text-align: center;
    border: 1px solid white;
    background: rgba(255, 255, 255, 0.2);
}

p {
    position: fixed;
    left: 0;
    bottom: 5px;
    color: #ffffff;
    z-index: 10;
    font-size: 16px;
    font-family: Helvetica, Verdana, sans-serif;
    opacity: 0.5;
    width: 100%;
    text-align: center;
    margin: 0;
}