.overlay {
    height: 100%;
    width: 0;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    /*background-color: rgb(0,0,0);
    background-color: rgba(0,0,0, 0.9);*/
    background-color: white;
    overflow-x: hidden;
    transition: 0.5s;
    z-index:101;
}

.overlay-content {
    /* position: relative;*/
    top: 15%;
    text-align: left;
    margin: 0 30px;
}

.overlay a {
    padding: 8px;
    text-decoration: none;
    font-size: 14px;
    color: black;
    display: block;
    transition: 0.3s;
}

    .overlay a:hover, .overlay a:focus {
        color: black;
    }