*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif, cursive;
}

#canvas1 {
    background: black;
    position: absolute;
    top: 0;
    left: 0;
    overflow: hidden;
}

#textInput {
    position: absolute;
    width: calc(100% - 20px);
    padding: 10px;
    margin: 10px;
    z-index: 100;
}