.page-content,#site-header,#site-footer,.otgs-development-site-front-end {display:none;}


body:before {
	background-image: url('https://museum.braasch.sh/wp-content/uploads/2024/11/Smartphone-drehen2.jpg');
     background-size: 400px 283px;
    display: inline-block;
    width: 400px; 
    height: 283px;
    content:"";
	 display: block;
    margin: auto;
    position: relative;
    text-align: center;
	 display: flex;
  justify-content: center;
	}