styles.css

/* Improved styling on tabbed view to add space between tab bar and content. */
.block_multiblock .multiblock-tabbed-list .tab-pane {
    padding-top: 1rem;
}

/* Reduce excessive spacing on accordion selectors. */
.block_multiblock .multiblock-accordion .card-header [data-toggle="collapse"] {
    padding: 0;
}

/* But make sure there is some spacing in the inner container. */
.block-region .block.card .multiblock-accordion [id^="multiblock-content"] .card-body {
    padding: 1.25rem;
}

/* Make dropdown full width */
.block_multiblock .multiblock-dropdown > .nav {
    margin: 0 0 1rem 0;
}
.block_multiblock .multiblock-dropdown .nav-item.dropdown {
    width: 100%;
    text-align: center;
}

/* Make 2-column layout not broken, generically. */
.multiblock-columns-2 .col-md-6:nth-of-type(odd) section {
    margin-left: 1rem;
    margin-right: 0.5rem;
}
.multiblock-columns-2 .col-md-6:nth-of-type(even) section {
    margin-left: 0.5rem;
    margin-right: 1rem;
}

.multiblock-columns-2-66-33 .col-md-8 section {
    margin-left: 1rem;
    margin-right: 0.5rem;
}
.multiblock-columns-2-66-33 .col-md-4 section {
    margin-left: 0.5rem;
    margin-right: 1rem;
}

.multiblock-columns-2-33-66 .col-md-4 section {
    margin-left: 1rem;
    margin-right: 0.5rem;
}
.multiblock-columns-2-33-66 .col-md-8 section {
    margin-left: 0.5rem;
    margin-right: 1rem;
}

/* Fix the multiblock 2/3 column layout to hide the parent container and remove its padding. */
/* Some of the rules are specified again in more selective versions for different themes. */
.multiblock-columns-2-parent[id^="inst"],
.multiblock-columns-3-parent[id^="inst"] {
    background: transparent;
    border: transparent;
}
.multiblock-columns-2-parent[id^="inst"] .multiblock > .container,
.multiblock-columns-3-parent[id^="inst"] .multiblock > .container {
    padding: 0;
    max-width: 100%;
}
.multiblock-columns-2-parent[id^="inst"] .multiblock > .container > .row > [class*="col-md-"],
.multiblock-columns-3-parent[id^="inst"] .multiblock > .container > .row > [class*="col-md-"] {
    padding: 0;
}
.multiblock-columns-2-parent[id^="inst"] > .card-body,
.multiblock-columns-3-parent[id^="inst"] > .card-body {
    padding: 0 !important; /* stylelint-disable-line declaration-no-important */
    border: transparent !important; /* stylelint-disable-line declaration-no-important */
}
.multiblock-columns-2-parent[id^="inst"] > .card-body > .card-text,
.multiblock-columns-3-parent[id^="inst"] > .card-body > .card-text {
    margin-top: 0 !important; /* stylelint-disable-line declaration-no-important */
    padding: 0 !important; /* stylelint-disable-line declaration-no-important */
}
.multiblock-columns-2-parent > .card-body > .card-title + .card-text,
.multiblock-columns-2-parent[id^="inst"] > .card-body > .block-controls + .card-text,
.multiblock-columns-3-parent > .card-body > .card-title + .card-text,
.multiblock-columns-3-parent[id^="inst"] > .card-body > .block-controls + .card-text {
    margin-top: 0.75rem !important; /* stylelint-disable-line declaration-no-important */
}

/* Additional tweaks for 3-column specifically. */
.multiblock-columns-3 .col-md-4:nth-of-type(3n+1) section {
    margin-left: 1rem;
    margin-right: 0.5rem;
}
.multiblock-columns-3 .col-md-4:nth-of-type(3n+2) section {
    margin-left: 0.5rem;
    margin-right: 0.5rem;
}
.multiblock-columns-3 .col-md-4:nth-of-type(3n+3) section {
    margin-left: 0.5rem;
    margin-right: 1rem;
}

/* Style fixes for multiblock. */
.multiblock-carousel {
    padding-bottom: 70px;
}

.multiblock-carousel a.carousel-control {
    top: auto;
    bottom: 5px;
    height: 40px;
    background: #fff;
    border: 1px solid #ddd;
    margin-bottom: -70px;
    opacity: 1;
}

.multiblock-carousel a.carousel-control span {
    color: #000;
}

.multiblock-carousel-bootstrap3 a.carousel-control > .carousel-control {
    position: relative;
}

.multiblock-carousel .flex-icon::before {
    font-size: 1.7em;
}

.multiblock-carousel-bootstrap3 .carousel-control-prev {
    left: 0;
    right: auto;
}

.multiblock-carousel-bootstrap3 .carousel-control-next {
    right: 0;
    left: auto;
}