Sorry, I can’t – for privacy reasons – give you the WP login, but here’s what I put in my custom css :
.woocommerce form.cart button.single_add_to_cart_button {background: #07C1B6!important;color:#FFF!important;}
And it still doesn’t work. The reason is that the style.css is included at the line 140, whereas the <style> with woocommerce css is at the line 373.
So I could add as !important as I want, it won’t change anything (because the woocommerce css has also an !important).
I don’t know if it comes from the woocommerce plugin or the neighborhood theme, but I think it’s stupid to add woocommerce styles in a <style> tag AFTER the custom css file. Is there a way for the developer to fix this in the next update of the theme ?
Also, is it necessary to include all the theme styles in the <head> ? Because it makes the page much heavier (328 lines added !) and could be included with a simple <link>.