misuzu/assets/less/mio/classes/container.less

.container {
    border: 1px solid var(--accent-colour);
    background-color: var(--background-colour);
    margin: 2px 0;
    box-shadow: 0 1px 2px var(--accent-colour);

    &--hidden { // __title should always be the first element of a container
        :not(:first-child) {
            display: none;
        }
    }

    &--translucent {
        background-color: var(--background-colour-translucent);
    }

    &__title {
        display: block;
        text-decoration: none;
        background-image: linear-gradient(0deg, transparent, var(--accent-colour));
        color: var(--text-colour-header);
        font-size: 1.17em;
        font-weight: 700;
        padding: 3px;
        font-family: @mio-font-heading;
        word-wrap: break-word;
        overflow: hidden;

        &--link:hover {
            text-decoration: underline;
        }

        &__link {
            color: inherit;
            text-decoration: none;

            &:hover {
                text-decoration: underline;
            }
        }
    }

    &__content { // only use this for text going forward, just throw your child container in directly after __title
        margin: 2px 5px;
    }
}