#section{max-width:1400px;height:auto;clear:both}
.col{width:100%;}
.col:first-child{margin-left:0;}

.un{
float:left;
background-color: #4c0504;
min-height: 100vh;

width:18%;
box-shadow: 2px 0px 5px rgba(0, 0, 0, 0.5);





}
.deux{

width:82%;


float:left;



}

.drap { max-width: 100%;
 }
 
 div.dt3 {
  text-align: right;
}
 
 
 

@media screen and (max-width: 860px) {

.un {display: none;}

}