body {
    font-family: verdana;
    color:white;
    color
    background-color: black;
    width: 100%;
    height: 100%;
    margin-top: 0px;
    margin-bottom: 0px;
    margin-right: 0px;
    margin-left: 0px;
}

.div01 {
    width: 100%;
    height: 100px;
    padding: 10px;
    font-size:100px;
    text-align: center;
    background-color: blue;
    
}