I'm using a child theme for my website, and try to change some style, for example the 'select' button at the homepage(refer select.jpg image). I tried to changed color, so I edit below code and insert to the child theme style.css file:
But this didn't work. So I trace the source of the style for that button, which is in style-sky-blue.min.css
I add this file name in my child theme, but also didn't work.
Please help to advice what is the correct way to customize the style of the theme.