html, body {
    height: 100%;
    background: whitesmoke;
    font-family: GothamBook;
}

/*fonts*/
@font-face {
    font-family: "GothamRoundedBold";
    font-weight: bold;
    src: url("../font/GothamRoundedBold.otf") format("opentype");
}

@font-face {
    font-family: "GothamBook";
    src: url("../font/GothamBook.otf") format("opentype");
}

/*common styles*/
.rounded {
    border-radius: 50%;
}

.bold {
    font-family: GothamRoundedBold;
}

.box {
    background-color: white;
    border-radius: 5px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, .12);
}

#course-box {
    font-size: 1.25rem;
    padding: 1.5rem 0;
    background-color: lightskyblue;
    border-radius: 20px;
    box-shadow: 0 1px 5px rgba(0, 0, 0, .12);
}

#course-box ul
{
    list-style-type: none;
}

#course-box li
{
    /*padding: 0.5rem;*/
    margin-bottom: 1.25rem;
}

.selected-menu {
    background-color: lightskyblue;
}

.rounded-img {
    width: 3.5rem;
    background-color: white;
    border-radius: 35%;
    padding: 1rem;
    margin-right: 1.5rem;
}


/* common adjustments*/
.jumbotron {
    background: url("../img/wallpaper.jpeg") center 25% no-repeat;
}


section .container-fluid {
    padding: 1rem;
}


/*main navigation*/
#main-nav {
    font-family: GothamRoundedBold;
    padding: 2rem 6rem;
    border-radius: 0;
}

#main-nav .navbar-brand {
    margin-right: 6rem;
}

#main-nav .nav-item {
    margin-right: 2rem;
}

#main-nav .nav-link {
    color: white;
    padding: 0.4rem;
    border-radius: 7px;
}

#main-nav .nav-item.active .nav-link {
background-color: #5cb85c; /* bootstrap success color*/
}

#main-nav .nav-link:hover {
    background-color: #5cb85c; /* bootstrap success color*/
}


/*cards*/
.card-deck {
    padding-bottom: 0.25rem;
}

.card {
    padding-bottom: 50px;
}

.card-block {
    display: flex;
    flex-flow: column;
}

.card-img {
    width: 80px;
}

.card-content {
    padding: 1rem;
}

.card .card-content a {
    margin-top: 1rem;
}

.card-footer {
    position:absolute;
    bottom: 0;
    height: 50px;
    width: 100%;
    background: white;
    padding: 1rem 3.5rem;
    color: darkgray;
}

#lession-content {
    background-color: white;
    border-radius: 5px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, .12);
    margin-top: 3rem;
    margin-bottom: 1rem;
    padding: 0.75rem;
}

section#footer {

    background: url("../img/wallpaper.jpg") center center no-repeat;
    color: white;
    padding: 5rem;
    background-color: #d1d1d1;
    font-size: 0.9rem;
}

section#footer #copyright {
	font-size: 0.5rem;
}


address {
    margin-top: 0.5rem;
}


/*responsiv adjustments*/
@media all and (min-width: 960px) {

    .card-deck .card {
        margin-right: 1.25rem;
    }

    .card-block {
        flex-flow: row;
    }
}