themes/docsy/assets/scss/blocks/_cover.scss

// A cover block is a full size cover with a fixed background for smaller screens.

@include td-box-height-modifiers(".td-cover-block");

.td-cover-logo {
    margin-right: 0.5em;
}

.td-cover-block {
    position: relative;
    padding-top: 5rem;
    padding-bottom: 5rem;
    background: {
        repeat: no-repeat;
        position: 100% 100%;
        size: cover;
    };

    & > .byline {
        position: absolute;
        bottom: 2px;
        right: 4px;
    }
}