#header {
    border-bottom: 10px solid #1f4a88;
}

/* custom breakpoint to accomodate graphic (tablets, 768px and up) */
@media (min-width: 450px) {
    
    #header {
        background-image: url('../img/oceanspac_header.jpg');
        background-color: #22396c;
    }
       
}

/* Small devices (tablets, 768px and up) */
@media (min-width: 768px) {

    #header {
        background-image: url('../img/oceanspac_header.jpg');
    }

}

/* Medium devices (desktops, 992px and up) */
@media (min-width: 992px) {
    
    .col-md-6:nth-child(even) {
        border-color: #1f4a88;   
    }                
}