.thumbnail{ position: relative; z-index: 0; } .thumbnail:hover{ background-color: transparent; z-index: 50; } .thumbnail span{ /*Estilos del borde y texto*/ position: absolute; background-color: white; padding: 5px; left: -100px; border: 1px dashed gray; visibility: hidden; color: #FFFF00; text-decoration: none; } .thumbnail span img{ /*CSS for enlarged image*/ border-width: 0; padding: 2px; } .thumbnail:hover span{ /*CSS for enlarged image on hover*/ visibility: visible; top: 0; left: 10px; /*position where enlarged image should offset horizontally */ }