The VB.net WebBrowser control is struggling to handle CSS divs that have a float property

I created a table on my HTML page using div tags. The content of the table can be hidden and shown with an onClick event in the corresponding Enabled/Disabled section. All styling for the div sections is done through CSS in a separate stylesheet.

My html, css, and js files are all stored locally on my disk and will primarily be accessed locally within the software I developed in VB.net.

The pages I designed look great in both Chrome and IE (v11), but when I view them using the WebBrowser control, it appears that the control is not handling the div elements with the float property properly (refer to image below).

Could someone please help me identify the issue here? I believe it may be more related to the WebBrowser control than the webpage styles themselves.

(click on image to view in new tab for better resolution)

htmlcssvb.netcss-floatwebbrowser-control

Answer №1

In the event that someone is searching for answers regarding this topic, I will provide my own solution:

It appears that many CSS3 features are not compatible with the VS WebBrowser control. The main issue did not lie in divs with a float property, but rather in the use of calc within the width property (width: calc(...);). By adjusting all CSS width properties to pre-calculated percentages, the table was able to regain its correct appearance.

There are other CSS properties that also do not function correctly, such as 

display: table; (cell, row, etc.)
and box-shadow.

UPDATE: I have uncovered an interesting aspect of Microsoft's emulation concept within the WebBrowser control. It seems that even if IE11 is installed, WebBrowser operates at the level of IE8 unless a registry key is modified or added to enable IE11's HTML5 and CSS3 capabilities. Refer to: http://www.codeproject.com/Articles/793687/Configuring-the-emulation-mode-of-an-Internet-Expl

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