.subframe {
    overflow: auto;
}

.sidenav {
    height: 100%;
    margin: 10;
    width: 15%;
    position: fixed;
    z-index: 1;
    background-color: #c4bbbb;
    overflow-x: hidden;
    padding-top: 20px;
  }

.sidenav a{
    padding: 6px 8px 6px 16px;
    text-decoration: none;
    font-size: 17px;
    color: #000;
    display: block;
    border: none;
    background: none;
    width:100%;
    text-align: left;
    cursor: pointer;
    outline: none;
  }

.sidenav a:hover {
    color: #f1f1f1;
    background-color: #9b8a8a;
  }

a.active {
    background-color: #709ee4;
    color:white
}

a.active_s {
  color:white
}

.submenu {
    background-color: #8b8b8b;
    padding-left: 8px;
  }