img{
    width: 100%;
}

.tab {
    background: #ffffff;
    position: relative;
    width: 100%;
    height: 400px;
    overflow: hidden;
    margin: 0 auto 20px auto;
}

.tab-nav { 
    height: 50px;
    overflow: hidden;
    background: #384158;
    border-radius: 10px;
}

.tab-nav a {
    margin-top: 5px;
    display: block;
    float: left;
    width: 20%;
    height: 50px;
    line-height: 20px;
    text-align: center;
    text-decoration: none;
    color: #999;
}

.tab-nav a.current {
    background: #14bdee;
    color: #fff;
}

.tab-con {
    position: relative;
    width: 100%;
    height: 400px;
    overflow: hidden;
    background: #ffffff;
}

.tab-con-item {
    display: none;
    width: 100%;
    height: 180px;
    text-align: center;
    color: #384158;
}
.controller{
    width: 400px;
    margin: 0 auto 10px auto;
}