.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: linear-gradient(to right, #26D0CE, #1A2980);
        overflow-x: hidden;
        transition: 0.5s;
    }

    .overlay-content {
        position: relative;
        top: 25%;
        width: 100%;
        text-align: center;
        margin-top: 30px;
    }

    .overlay a {
        padding: 8px;
        text-decoration: none;
        font-size: 36px;
        color: #818181;
        display: block;
        transition: 0.3s;
    }

        .overlay a:hover, .overlay a:focus {
            color: #f1f1f1;
        }

    .overlay .closebtn {
        position: absolute;
        top: 20px;
        right: 45px;
        font-size: 60px;
    }

    .btnavoid {
        width: 20%;
        padding-top: 10px;
        padding-bottom: 10px;
        background-color:#f44118;
        border:1px solid #f44118;
        color:white
    }