Windows 10: Why is there a white line on top of my task bar windows 11 dev channel

there is a white line on my windows 11 task bar i need to remove it

:)

 

Chrome---lots of white space at top of screen

Not exactly sure how to word this. When I go to Chrome, this is what I see, from top to bottom:

1. Tabs at very top.
2. Address bar.
3. Below address bar, huge amount of white space, then a line.
4. Content.

The huge white space takes up precious screen space. I want to get rid of it. At one point, Chrome/Google had some stuff there, which I deleted. But I cannot find a way to remove the white space. This wasn't there when I was running Windows 7 two weeks ago.
Now I am running Windows 10.

Thanks.

 

flashing line on the bottom of my task bar,

I have a flashing line on the bottom of my task bar, an ever since that showed up, my computer isn't acting right. It's like when you have an icon in use, there's a highlighted white bar on the bottom of that icon, but this is just the flashing white bar.

 

blinking Line under the task bar

Hi

Ever since I updated my Lenovo laptop Win 8.1 to 10 there is a blinking white line under the task bar, it is very irritating !

How can I get rid of it !?