How can CSS height/width be verified according to set guidelines?

I am currently in the process of developing an ASP.NET control that generates <object> and <embed> tags. In order to ensure compatibility, I intend to add "Height" and "Width" properties to the control as both tags require these attributes. Additionally, I am considering implementing a validation system for height and width values during runtime. My main concern is determining the acceptable ranges of sizes to validate against.

I have come across various types of height and width settings in the past. However, I am uncertain if all the formats I have encountered are valid. Where can I find a comprehensive list of accepted formats for height and width attributes? Moreover, are there any unconventional values that may seem invalid but are actually used as workarounds for achieving cross-browser compatibility?

  • 1px
  • 10%
  • 99.99%
  • 100

While I am contemplating allowing users to input custom values for height and width, my curiosity has been piqued regarding the standard guidelines.

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