html, body {
    left: 0;
    top: 0;
    height: 100%;
    width: 100%;
    padding: 0;
    margin: 0;
    background-color: #333333;
    font-size: 100%;
}

* {
    box-sizing: border-box;
}

target {
    position:relative;
    height: 0;
    width: 0;
    padding: 0;
    margin: 0;
}