body {
           back ground-color: pink;                                                                                                                                                                   
}

s1{
float: left ;
width: 60% ;
}

header  {
                 width:80% ;                                      }
                 background color: pink;               .Article {
                                                                                              padding: 5px
                                                                                              background: pink;
                                                                                              width:15%
                                                                                              margin: 5%
                                                                                              }
                                                                                                 
}
nav }
        width: 20% ;
        background color: pink;
}