@media screen and (max-width: 700px) {
    .topnav {
        display: none;
    }
    .sidenav {
        height: 100%;
        width: 0;
        position: fixed;
        z-index: 1;
        top: 0;
        left: 0;
        background-color: #111;
        overflow-x: hidden;
        transition: 0.5s;
        padding-top: 60px;
        text-align: center;
    }
    .sidenav a {
        padding: 8px 8px 8px 8px;
        text-decoration: none;
        font-size: 25px;
        color: #818181;
        display: block;
        transition: 0.3s;
    }
    .sidenav a:hover {
        color: #f1f1f1;
    }
    .sidenav .closebtn {
        position: absolute;
        top: 0;
        right: 25px;
        font-size: 36px;
        margin-left: 50px;
    }
    .panel {
        padding: 0 18px;
        display: none;
        background-color: #111;
        overflow: hidden;
        color: white;
        height: 100%;
        z-index: 1;
    }
}

@media screen and (min-width: 700px) {
    #opennavtop {
        display: none;
    }
    #mySidenav {
        display: none;
    }
}

.disable-select {
    user-select: none;
    /* supported by Chrome and Opera */
    -webkit-user-select: none;
    /* Safari */
    -khtml-user-select: none;
    /* Konqueror HTML */
    -moz-user-select: none;
    /* Firefox */
    -ms-user-select: none;
    /* Internet Explorer/Edge */
}