ul.tabs {
    margin: 0;
    padding: 0;
    float: left;
    list-style: none;
    width: 100%;
}

ul.tabs li {
    margin: 0;
    cursor: pointer;
    line-height: 31px;
    border: 1px solid #ccc;
    background-color: #eee;
    color: #000;
    overflow: hidden;
    position: relative;
    text-align: center;
    float: left;
    width: 100%;
    font-weight: bold;
}
ul.tabs li:last-child{display: none;}
@media screen and (min-width: 480px){
    ul.tabs li{width: 50%}
}
@media screen and (min-width: 640px){
    ul.tabs li, ul.tabs li:last-child{width: 33.333333%;}
    ul.tabs li:nth-child(1), ul.tabs li:nth-child(2), ul.tabs li:nth-child(3), ul.tabs li:nth-child(4){width: 24.9999%;}
    ul.tabs li:last-child{display: block;}
}
ul.tabs li:hover {
    background-color: #fff;
}

ul.tabs li.active {
    background-color: #fff;
    display: block;
    border-bottom-color: #fff;
    color: blue;
}

.tab_container {
    border: 1px solid #ccc;
    clear: both;
    float: left;
    width: 99.9999%;
    background: #fff;
    overflow: auto;
    margin-top: -1px;
}

.tab_content {
    padding: 20px;
    display: none;
}