#nav{
    background-color: hotpink;
    color:grey;
    position: fixed;
    width:100%;
    top:0;
    left:0;
    z-index: 10;
}
#content{
    height:1000px;
    position: relative;
    border: 5px darkkhaki dotted;
    background-color: darkviolet;
    top: 100px;
}