.section-gray {
    background: #f7f7f7;
    border-top: solid 1px #eeeeee;
    border-bottom: solid 1px #eeeeee;
}

header {
    background-color: #212529;
}

.hero {
    background-color: #0184b2;
    background-image: url("../images/ocean-background-bottom-short.png");
    background-size: cover;
}

@media screen and (min-width: 768px) {

    /* Make the header semi-transparent at 'md' and make the hero under below it */
    header {
        background-color: rgba(0, 0, 0, 0.6);
        position: relative;
        z-index: 9999;
    }

    .hero {
        position: relative;
        z-index: 100;
        margin-top: -80px;
    }

    /* Extended Spacing Utility Classes */
    .pt-md-10 {
        padding-top: 6rem !important;
    }
}

.featured .col-lg-4 {
    margin-bottom: 1.5rem;
    text-align: center;
}

.progress { height: 1.6rem; }
.progress .progress-bar {
    background-color: #81bde9;
}

.accordion-button:not(.collapsed) {
    color: #212529;
    background-color: #f7f7f7;
    box-shadow: inset 0 -1px 0 rgb(0 0 0 / 13%);
}

/* Section - Portfolio */
.portfolio-logos img {
    max-width: 200px;
    max-height: 150px;
}

/* Section - Sandboxes */
#section-sandboxes ul {
    list-style-type: none;
    padding: 0 0.8rem 0.8rem;
}

#section-sandboxes ul li {
    margin: 5px 0;
    padding: 0;
}


/* Section - Contact */
#section-contact .contact-submit {
    background-color: white;
    border-color: #2b90d9;
    width: 100%;
}

#section-contact .contact-submit:hover {
    background-color: #2b90d9;
    color: white;
}

/* Lightbox Modal */
.modal.lightbox .modal-content {
    background-color: white !important;
}

.modal.lightbox .modal-content .carousel-item {
    padding: 0 1rem;
}

.modal.lightbox .modal-content .carousel-item.active {
    overflow: scroll;
}

.modal.lightbox .modal-content .carousel-item img {
    margin: 2rem auto;
    display: block;
}

.modal.lightbox .modal-content .carousel-item .portfolio-logos img {
    max-width: 400px;
    max-height: 250px;
}

.modal.lightbox .modal-content .carousel-item .portfolio-logos a {
    display: block;
    margin-bottom: 2rem;
}

.modal.lightbox .modal-content .carousel-item ul {
    padding-bottom: 2rem;
}