Untitled

body{font-family: Georgia, 'Times New Roman', Times, serif;}  
header{background-color: dodgerblue;
    color:white;
    padding:10px;
    text-align:center;
}
content{
    background-color: lightblue;
    padding:100px;
}
.lewy{
    background-color: dodgerblue;
    color:white;
    width:20%;
    height:220px;
    float:left;
}
.srodek,.prawy{
    background-color: dodgerblue;
    color:white;
    width:40%;
    height: 220px;
    text-align: center;
    float:left;
}
a{border:1px, dimgray, solid;}