Remove the page titles

add this code at the end of your theme’s style.css file:

h1.entry-title{
display: none;
}

Tkx so much

but in the theme folder i don’t find the style.css
The styleheets of Customizr are located in inc/css. Each skin has its own stylesheet : blue.css, green.css, …

Can I add this code in the color of I change?

when I add this code at the red.css
Menu duplicate
=\

You should put that code in your child-theme style.css if you have a child-theme or in your Custom-css box.
https://doc.presscustomizr.com/customizr/advanced-options/#custom-css
https://doc.presscustomizr.com/customizr/customize-customizr-wordpress-theme/#where-do-i-put-the-css-snippets-