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: #fff;
z-index:10;
font-size:16px;
font-family: Helvetica, Verdana, sans-serif;
opacity:0.5;
width: 100%;
text-align: center;
margin: 0;
}