.oben{
    width:  100%;
    height: 100px ;
    color: white;
    background-color: rgb(0, 0, 59);
}
body{
background-color: blue;
color: white;
font-family: "Roboto Slab", serif;
font-optical-sizing: auto;
font-weight: weight;
font-style: normal;
}
a{
    color: white
    ;
}