Default theme - changing Headers size

[writer101]

Things I have tried

Ok, this is dumb newbie problem.
I’m using the default theme and find the Headers too large. I’ve seen posts to change this. So I tried adding a obsidian.css file in the vault/… location.

* << EDITOR and PREVIEW HEADERS >> */

.cm-header-1, .markdown-preview-view h1 {
  font-size: 1.55em;
  color: #797972;
  font-weight: 400 !important;
}

.cm-header-2, .markdown-preview-view h2 {
  font-size: 1.4em;
  color: #797972;
  font-weight: 400 !important;
}

.cm-header-3, .markdown-preview-view h3 {
  font-size: 1.3em;
  color: #797972;
  font-weight: 400 !important;
}

.cm-header-4, .markdown-preview-view h4 {
  font-size: 1.2em;
  color: #797972;
  font-weight: 400 !important;
}

.cm-header-5, .markdown-preview-view h5 {
  font-size: 1.1em;
  color: #797972;
  font-weight: 400 !important;
}

.cm-header-6, .markdown-preview-view h6 {
  font-size: 1em;
  color: #797972;
  font-weight: 400 !important;
}

But in Settings, when I reload CSS snippets it indicates nothing found. But when I click on the open snippets folder, I can see the obsidian.css file I created there.

What am I doing wrong?

thanks

[writer101]

Note, the above issue is a problem on Win 10.

I also use Linux, and in this case, I can reload the css file. Though it doesn’t change the header size.

[mnvwvnm]

How do you create the css file?
To check if any problem with file, try this one (a file with your code).

Headers.css (721 Bytes)