/* Kolbo Product UX Booster base CSS v1.0.4 */
form.cart .kolbo-var-must-select,
.variations_form .kolbo-var-must-select {
    outline: 3px solid #ff4d4d !important;
    border-radius: 6px;
    box-shadow: 0 0 10px rgba(255,77,77,.35);
}