body {
    background-color: white;
}

/* set a max-width for horizontal fluid layout and make it centered */
.container-fluid {
   margin-right: auto;
   margin-left: auto;
   max-width: 936px;
   margin-top: 20px;
 }


/* margin left/right auto and display block to make header img class center */
.header {
display: block;
background-color: rgba(223, 204, 161, 0.9);
margin: .5em 0 1em 0;
padding: 0;
}