#thebox{
    border: none;
    outline: none;
    position: absolute;
    top:calc(50% - 0.75em);
    height: 1.5em;
    background: none;
    width: 200px;
    left:calc(50% - 100px);
    line-height: 1.5em;
    text-align: center;
    font-family: sans-serif;
    font-size: 1.5em;
}