.col {
    color: red;
    width: 500px;
    height: 1000px;
    background-color:;
}

.block p {
    width:500px;
    height:500px;
    background-color:white;
    color: white;
   
}
body {
    background-color:white;
    background-image:url(Po.jpg);
    background-repeat: no-repeat;
    background-size: 1700px
}
    
 .lefting {
    width: 100%;
    height: 50px;
    background-color:red;
    }        

 .header {
    background-color: #1E90FF;
    width: 50%;
    height: 20px;
}

 .col    {
    color: blue;
     width: 9px;
     height:300px;
     background-color: red;
}

 .asdfasdf  {
    color: blue;
     width: 9px;
     height:300px;
     background-color: white;
}