Correct background bleed-through

[lat9]

If the Sidebox Background Color is set to #ff0000, you'll see a teeny background bleed-through on any sideboxes that contain lists at the bottom of each list. That's the list-group-flush background (default: #ffffff) bleeding through:

[lat9]

Similarly, if the Add-to-Cart Card Border Color is set to #ff00ff and site-specific styling sets #cartAdd { background-color: blue; }, there's a teeny blue bleed-through at the bottom of the add-to-cart element:

This Bootstrap base issue suggests adding .card-body { border-radius: inherit; } to correct the issue. Unfortunately, in this whack-a-mole situation, that results in unwanted bleed-through at the top of the element:

The full correction for this case is the addition of the following to the stylesheet:

.card-body {
    border-radius: inherit;
}
.card-header+.card-body {
    border-top-left-radius: 0;
    border-top-right-radius: 0;
}