/* The navigation bar */

ul > li {
    display: inline-block;
    margin-left: 4px;
    padding-left: 0px;
    /* You can also add some margins here to make it look prettier */
}

/* #oper_container ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333333;
}

#oper_container ul li {
    float: left;
}

#oper_container ul li a {
    display: block;
    color: white;
    text-align: center;
    padding: 16px;
    text-decoration: none;
}

#oper_container ul li a:hover {
    background-color: #111111;
}  */

.mycontent {
    height: 95vh;
}