In this video we have discussed about base tag in html. Basically base tag is used to hold common url or path and later this path or url will automatically be substituted before all the relative urls/paths. This way we don't need to write the same common path/url again and again. So, we put common path/url in base tag. Also, there should be only one base tag in html. If we put more than one base tag in that case, only one base tag will be considered that are on top and rest all base tag will be ignored.
