.sprite-appiphone-client {
    background: url('../../images/app-iphone-client/sprite.png') no-repeat top left;
    display: inline-block;
}

.sprite-app-iphone-client{ background-position: 0 0; width: 238px; height: 467px; } 
.sprite-app-iphone-discussion-live{ background-position: 0 -468px; width: 213px; height: 153px; } 
.sprite-app-iphone-informations{ background-position: 0 -622px; width: 213px; height: 153px; } 
.sprite-app-iphone-retrouver-billets{ background-position: 0 -776px; width: 213px; height: 153px; }