What is a Child Theme?
Painting directly on the wall would be risky, wouldn’t it? Because if you make a mistake, you would have to redo the whole wall. Also, if you move to a new house, you would have to repaint the artwork on your new living room wall.
However, if you paint on a canvas, a mistake would only require a new canvas, not a new wall. Second, if you move, you can simply take the canvas with you and rehang it on your new wall. Easy peasy.
It’s the same with themes built on a framework. Making customizations to a parent theme (i.e. a theme without a child theme) is like painting directly on your living room wall.
But customizing a child theme, is like painting on a canvas. With a child theme, there’s less to mess up and you won’t have to “repaint” (i.e. make your customizations all over again) when you upgrade. And plan on upgrading because there are new updates for WordPress all the time.
What is a Child Theme?