Browser incompatibility is one of the most widely faced web development challenges. A website should work well on multiple browsers and devices. However, this is not always the case.   A lot of browsers do not support the same features and standards, giving rise to cross-browser incompatibility issues.   A solution for this issue is to handle the Doctype error in the webpage by adding a simple line at the beginning of the code, which is -! DOCTYPE HTML.   For more solutions and other challenges, please read top web development challenges and solutions.