LibWeb: Float issue with full width divs

[jamierocks]

Test Program

<div style="width: 100%; float: left; background-color: red;">
    <h2>Well</h2>
    <p>well</p>
</div>
<div style="width: 100%; float: left; background-color: red;">
    <h2>Hello</h2>
    <p>hello</p>
</div>
<div style="width: 100%; float: left; background-color: red;">
    <h2>Friends</h2>
    <p>friends</p>
</div>

Expected Result (Firefox)

Actual Result (Ladybird)

Note the white line between the second and third divs.

Thoughts

Might be related to GH-107 and GH-231. Might be a similar issue to https://github.com/SerenityOS/serenity/pull/24241.

[jamierocks]

I think this might be a rounding issue, the issue seems to occur between all divs if you zoom in.

[shannonbooth]

This appears to have been fixed now:

[gmta]

@shannonbooth still seeing this issue at 130% zoom in Ladybird, while other browsers do not expose this issue: