.sidenav {
    height: auto;
    width: 0px;
    z-index: 9;
    top: 50px;
    background-color: #212e4c;
    overflow-x: hidden;
    transition: 0.3s;
    position: fixed; 
    top:0; 
    right:0;
    margin-top: 11%;
}

.sidenav a {
    text-decoration: none;
    font-size: 25px;
    color: white;
    display: block;
    transition: 0.3s;
    cursor: pointer;
    padding-top: 4%;
    padding-bottom: 4%;
    padding-left: 3%;
    border-bottom: 1px solid black;
}

.sidenav a:hover {
    color: #f1f1f1;
    background-color: #1f64b5;
}

.sidenav .closebtn {
    position: absolute;
    top: 0;
    right: 25px;
    font-size: 30px;
}

.button_accesibility {
    background-color: Transparent;
    background-repeat:no-repeat;
    border: none;
    cursor:pointer;
    overflow: hidden;
    outline:none;
    color: white;
    padding: 1px;
    font-size: 15px;
}