header{
    color: red;
    
    font-size: 20px;
 }
 nav{
    width: 20%;
    float: left;
 }
 nav a{
    background-color: red;
    border-radius: 10px 0 10px 0;
    color: #fff;
    margin: 10px;
    padding: 10px;
    text-decoration: none;
    display: block;
 }
 section{
    float: right;
    width: 75%;
    color: #7209b7;
    border-radius: 5px;
    box-shadow: 1px 0 4px rgb(0, 0, 0, .2);
    margin-bottom: 15px;
    padding: 15px;
 }
 footer{
   text-align: center;
   color: aquamarine;
 }