How to enable/allow full-width logo or header

I tried both of these but it did not work

#header-title-logo {
background-image:url('/path-to-the-logo-image') !important;
background-position:center center;
height:60px;
background-size:100% 100%;
}

and this as well

#header-area img { width: 100%; height: auto; }

The page I need help with: [log in to see the link]