body {
    background-color: #383838;
    font-family: Arial, sans-serif;
    line-height: 1.5;
    color: #464646;
}

.tab-wrapper {
    margin: 60px auto;
   /* width: 70%;
    max-width:500px;*/
}

.tab-menu li {
    position:relative;
    background-color: #fff;
    color:#bcbcbc;
    display: inline-block;
    padding: 20px 40px;
    opacity: 0.8;
    cursor:pointer;
    z-index:0;
}

.tab-menu li:hover {
    color:#464646;
}

.tab-menu li.active {
    color:#464646;
    opacity: 1;
}

.tab-menu li.active:hover {
    color:#464646;
}

.tab-content>div {
    background-color: #fff;
    box-sizing:border-box;
    width: 100%;
    padding: 50px;
    min-height:200px;
}

.line {
    position:absolute;
    width: 0;
    height: 7px;
    background-color: aqua;
    top: 0;
    left: 0;
}