First, let's make a copy of the current template. This is the best approach if you want to modify the current template. You avoid the risk that any code changes will be overwritten if the original template should ever be updated. Joomla allows you to easily create a copy of all of the template's files in a new folder.
To create a copy, go to Extensions | Template Manager. Click Templates in the submenu on the left-hand side.
In the Template Manager | Templates screen, click the link Protostar Details and Files. You're taken to the Template Manager | Customise Template screen. Click on the Copy button. Enter a name for the template copy (for example,
Protostar_copy). You can use only letters, numbers, dashes, and underscores. Click Copy template in the pop-up screen. The pop-up closes. Now click Close to return to the Templates screen.Finally, switch to the Template Manager | Styles screen by clicking the Styles link in the menu on the...