.tab{overflow:hidden;border:1px solid #ccc;background-color:#f1f1f1;}.tab button{background-color:inherit;float:left;border:none;outline:none;cursor:pointer;padding:14px 16px;transition:.3s;font-size:17px;}.tab button:hover{background-color:#ddd;}.tab button.active{background-color:#ccc;}.tabcontent{display:none;padding:6px 12px;-webkit-animation:fadeEffect 1s;animation:fadeEffect 1s;}@-webkit-keyframes fadeEffect{from{opacity:0;}to{opacity:1;}}@keyframes fadeEffect{from{opacity:0;}to{opacity:1;}}