/* css */
#Menu_1{
    position:fixed;
    top:0;
    left:0;
    height: 100%;
    display: none;
    min-width: 250px;
    max-width: 350px;
    z-index: 1100;
    text-align: initial;
    overflow-y: auto;
}
#Menu_1 .w3-button{
    display: block;
    text-align: left;
}