.aaccordion{width:80%;margin:0 auto;overflow:hidden;list-style:none;} .aaccordion li{ float:left; width:20%;overflow:hidden;height:360px;transition:0.2s;} .aaccordion div{padding:10px;} .aaccordion:hover li{width:10%;} .aaccordion li:hover{width:60%;} .ttab_1{ background:red; } .ttab_2{ background:orange; } .ttab_3{ background:yellow; } .ttab_4{ background:green; }