body {
}
.topbar {
    /*background-color: #808080;*/
    opacity: 0.6;
    height: 80px;
    overflow: hidden;
    width:100%;
}
.bg-img {
    /* The image used */
    /*background-image: url('../FacultyPages/img_nature.jpg');*/
    min-height: 180px;
    /* Center and scale the image nicely */
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    /* Needed to position the navbar */
    position: relative;
}



.clr{
    background-color:black;
}

#navbar {
    overflow: hidden;
    background-color: #337ab7;
    padding: 60px 10px;
    transition: 0.4s;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 99;
    color:white;
}

    #navbar a {
        float: left;
        color: white;
        text-align: center;
        padding: 12px;
        text-decoration: none;
        font-size: 18px;
        line-height: 25px;
        border-radius: 4px;
    }

    #navbar #logo {
        font-size: 35px;
        font-weight: bold;
        transition: 0.4s;
    }

    #navbar a:hover {
        background-color: #ddd;
        color: black;
    }

    #navbar a.active {
        background-color: dodgerblue;
        color: white;
    }

#navbar-right {
    float: right;
}

.cont {
    margin-top: 50px;
    text-align: center;
    width: 70%;
    margin: auto;
}

@media screen and (max-width: 580px) {
    #navbar {
        padding: 20px 10px !important;
    }
        #navbar #logo {
            font-size: 25px;
        }
        #navbar a {
            float: none;
            display: block;
            text-align: left;
        }

    #navbar-right {
        float: none;
    }
}