.header{ background: #ffffff; }.site-header{ min-height: 52px; }.error-page-inner{
	width: 100%;
    height: 100%;
    min-height: 100%;
    position: absolute;
    background: url(http://cinepassion34.fr/wp-content/themes/moview/images/404-bg.png) no-repeat 100% 0; 
    background-size: contain;
}