Hello Eki,
I think you set up the child theme incorrectly, create a folder for the child theme, inside the folder named “sanahaltuun”, place your new style.css and a folder css with modified ie.css in it. In the new style.css, the header must have import url.
/*
Theme Name: Twenty Fourteen 0d0200/2c0600
Theme URI: https://example.com/twenty-fourteen-child/
Description: Twenty Fourteen Child Theme
Author: idog
Author URI: https://www.dognmonkey.com/techs12/
Template: twentyfourteen
Version: 1.0.0
Tags: light, dark, two-columns, right-sidebar, responsive-layout, accessibility-ready
Text Domain: twenty-fourteen-child
*/
@import url(“../twentyfourteen/style.css”);