.gallery_module{ background-size: contain; background-position: center; background-repeat: no-repeat; height: 200px; } .gallery_module_1{ height: 600px; } .gallery_module_2{ height: 400px; } .gallery_module_3{ height: 250px; } .gallery_module_4{ height: 200px; } .gallery_module_3_big{ height: 400px; } .gallery_module_3_small{ height: 195px; } .gallery_module_3_small_top{ margin-bottom: 10px; } .gallery_module_3_small_bottom{ margin-top: 10px; } .gallery_module_separator{ margin-bottom: 20px; } @media (max-width: 520px){ .wow{ animation-delay: 0s!important; } .gallery_module_3_small_top{ margin-bottom: 0; } .gallery_module_3_small_bottom{ margin-top: 0; } .gallery_module_separator{ margin-bottom: 0; } .gallery_module{ height: 250px; margin: 10px 0; } }