body {
    padding: 0;
    margin: 0;
    background-color: rgba(50, 50, 50, 1);
    font-family: Montserrat, sans-serif;
}

/*--- navigation bar ---*/

.navbar {
    background-color: #006;
}

.navbar-brand .brand-image {
    max-width: 220px;
}

.nav-link, .navbar-brand {
    color: #fff;
    cursor: pointer;
}

.nav-link {
    margin-right: 1em !important;
}

.nav-link:hover {
    color: #000;
}

.navbar-collapse {
    justify-content: flex-end;
}

.sticky {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 999;
}

/* header */
.header {
    background-image: url('../img/fb_cover_2018.jpg');
    background-size: cover;
    background-position: center;
    position: relative;
}
.overlay {
    position: absolute;
    min-height: 100%;
    min-width: 100%;
    left: 0;
    top: 0;
    background-color: rgba(0, 0, 0, 0.8);
}

.description {
    left: 45%;
    position: absolute;
    top: 45%;
    transform: translate(-50%, -55%);
    text-align: center;
    padding-top: 30px;
}

/* cards */

div.card.category {
    background-color: rgba(0, 0, 24, 0.2);
    color: rgba(200, 210, 255, 1);
    border: 1px solid rgba(200, 210, 255, .5);
}

div.card.category h3.card-title {
    color: rgba(200, 200, 200, 1);
}

div.card.category .card-header {
    border-bottom: 1px solid rgba(200, 210, 255, .5);
    background-color: rgba(0, 0, 24, 0.5);
}

div.card.category .card-img {
    height: 250px;
}

.description h3 {
    color: #aa6;
}

.description p {
    color: #fff;
    font-size: 1.3rem;
    line-height: 1.5;
}

.description .btn {
    border-top-right-radius: 50%;
    border-bottom-left-radius: 50%;
}

.features .form-control, .features input {
    border-radius: 0;
}

.features .btn {
    background-color: #006;
    border: 1px solid #006;
    color: #fff;
    margin-top: 20px;
}

.features .btn:hover {
    background-color: #333;
    border: 1px solid #333;
}

div.first-row {
    padding-top: 20px;
    padding-bottom: 10px;
}

div.last-row {
    padding-top: 10px;
    padding-bottom: 20px;
}

.card-deck {
    padding-bottom: 50px;
}

.card-img-top {
    width: 250px;
}

.footer-copyright {
    padding-top: 40px;
    padding-bottom: 40px;
}

.page-footer {
    background-color: rgba(0, 0, 24, 1);
    color: #eee;
    padding-top: 30px;
}

.fa.fa-envelope {
    color: #c69;
}

.fa.fa-whatsapp {
    color: #090;
}

.fa.fa-facebook-official {
    color: #36f;
}

button[name=subscribe] {
    background-color: #f00;
    color: #fff;
    border: 1px solid #fff;
    margin-left: 3px;
}

button[name=subscribe]:hover {
    background-color: #a00;
    color: #fff;
    border: 1px solid #ff0;
    margin-left: 3px;
}

/*//////////////////////////////////////////////////////*/
@media (max-width: 768px) {
    .header {
        width: 100%;
        height: auto;
    }

    .col-sm-12 {
        padding-top: 15px;
    }
}

@media (max-width: 576px) {
    .description {
        left: 0;
        padding: 0 15px;
        position: absolute;
        top: 10%;
        transform: none;
        text-align: center;
    }

    .description h1 {
        font-size: 2em;
    }

    .description p {
        font-size: 1.2rem;
    }

    .features {
        margin: 0;
    }
}