If you do not pay attention to the specifications that bootstrap introduces css and fonts, it may cause bootstrap to fail to display normally when displaying glyphicon icons and display as a box.
At this time, you can search for .glyphicon in bootstrap.css and you can find that there are URLs that introduce fonts about 10 lines up and down, as shown below:
Just make sure that the directory exists.
Usually errors are caused by incorrect paths.
The above is the solution to the BootStrap glyphicon icon that the editor introduced to you. I hope it will be helpful to you. If you have any questions, please leave me a message and the editor will reply to you in time. Thank you very much for your support to Wulin.com website!