|Glyphicon does not render|
One reason for this could be because the paths for the fonts resource is not setup correctly.
If using the CDN link provided on the bootstrap website is not an option, then ensure that the directory looks like this -
Then, include the path to bootstrap.css in the HTML file.
|Link to bootstrap.css in the html document|
Reload the page in the browser, and that should load the glyphicon.