Hello,
Edit the single product add to cart button min-width to 170px. After that go to Theme Options > Custom CSS
div.quantity ~ .et-or-wrapper {
display: none;
}
.et_product-block .et-single-buy-now.single_add_to_cart_button.button, .product-content .et-single-buy-now.single_add_to_cart_button.button {
flex: 0;
}
.single-product-builder .single_add_to_cart_button.button {
margin-right: 15px;
}
Regards