body
{
    width: 100%;
    background-color: #d4d9df;
    padding-top: 0;
}

 header
 {

     width: 80%;
     height: 790px;
     background: url("../img/background.jpg") no-repeat center;
     background-size: cover;
     margin-left: auto;
     margin-right: auto;
     margin-top: 0;

 }