CSS (Weebly) blog sidebar, content width, scrollbars - Help, please!

Hi, everyone! I am new here and new to CSS!

How to add scrollbar on hover-acrivated Menucontent (goal: barrierfree)

Well i did some internet-search, but i am not sure how to solve this.
I am not sure i is fully solvable Tongue

"overflow: scroll/auto" does not seem to help much, or does it?!

prerequisites:
- I have a dropdown-menu (here: Menu raw-skeleton)
- people with bad eyesight want to ZOOM-IN (maybe massively so!)
- in highzoom of lowresolution only a part of the menu-content is visible
- you cannot scroll, because the menu is activated by ":hover", if you leave the content-area, the menu closes
-> Content is not readable!

Question:
If i:

Page extends with scollbar witout any conten

Hi

My hair is turning grey. I have this page with a header and footer and content in between. For some reason the page expands and adds scrollbars without any content has been added. pls look at my code and help Smile

CSS CODE:

@charset "UTF-8";
/* CSS Document */
 
body {
	margin:0px;
	padding:0px;
	height:100%;
	background-color:#efeff0;
 
	  }
 
* {
	margin: 0;
	padding: 0;
	height:100%;
 
 
}
 
h3 {
	font-size:14px;
	margin:0;
	padding:0;
	display:inline;
}
 
h4 {
	font-family:Arial, Helvetica, sans-serif;
	font-size:12px;
	margin:0;
	padding:0;

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