SASS doesn't compile when path is in @extend .selector ul li ... How to fix?

Question

css

Good day to all! Essence of the question:
I want to inherit class properties through @extend....
When: .info__line__navigation
display: inline-block
.social_media ul li
@extend .info__line__navigation
everything happens fine, but when I add the path from ul li to @extend , an error occurs:
.info__line__navigation ul li
display: inline-block
.social_media ul li
@extend .info__line__navigation ul li

Answer 1

Sass cannot extend legacy styles.
You can take out common styles in a placeholder (or mixin) and extend it to both elements:

%li_style
  display: inline-block
.info__line__navigation ul li
  @extend %li_style
.social_media ul li
  @extend %li_style