#custom-attribute-simple-product { margin-bottom: 20px; }
#custom-attribute-simple-product .swatch { display: inline-block; width: 32px; height: 32px; border: 2px solid #ccc; margin-right: 8px; cursor: pointer; border-radius: 4px; }
#custom-attribute-simple-product .swatch.selected { border-color: #0073aa; box-shadow: 0 0 5px #0073aa; }