.s_hr {
    line-height: 0;
    hr {
        padding: 0;
        border: 0;
        border-top: 1px solid $border-color;
        margin: 0;
        color: inherit;
        // As BS5 added "opacity" and "background-color" on hr tag, we remove
        // that here to let users set the color as they want.
        opacity: 1;
        background-color: transparent;
    }
}