.logo-img{position:absolute;top:30px;left:45px;width:150px;height:auto}@media(min-width:768px){.logo-img{top:60px;left:90px;width:200px}}.maintain-img{width:75px;height:auto}@media(min-width:768px){.maintain-img{width:100px}}.left-wave{position:absolute;top:200px;left:0;width:200px;height:auto;z-index:-1}@media(min-width:768px){.left-wave{top:200px;left:0;width:400px}}.right-wave{position:absolute;bottom:50px;right:0;width:100%;height:auto;z-index:-1}@media(min-width:768px){.right-wave{bottom:50px;right:0;width:900px}}