@media (max-width:1700px){ .dypc_wz{ position: fixed; z-index: 10; top: 80%; left: 20px; } .dypc_dx{ height: 100px; } } @media (min-width:1700px){ .dypc_wz{ position: fixed; z-index: 10; top: 80%; left: 20px; } .dypc_dx{ height: 120px; } } @media (max-width:1200px){ .dypc_wz{ position: fixed; z-index: 10; top: 80%; left: 20px; } .dypc_dx{ height: 100px; } }