#header-div {
    width:90%;
    border: 0px solid #969696;
    margin: auto;
    text-align: center;
    margin-top:60px; 
    margin-bottom:80px; 
}   
@media (orientation: landscape) {
    .logo-img {
        width: auto;
    	height: 120px;
    }
}
@media (orientation: portrait) {
    .logo-img {
        width: auto;
	    height: 170px;
    }
}