Messing with magento custom theme, overriding magento theme.
Before diving into theme customization we need to have an quick overview of magento 2 directory structure. Magento 2.x directory structure. As mentioned my earlier post magento 2 directory structure differ from magento 1, so it is important to have a clear knowledge about directory of magento 2. The root magento 2 project directory looks like the screen shot attached above. All you need to know about the app folder because other folders contains pre-defined core files which we will not modifying in order to customized our theme or module. Pre existing theme file resides under path <magento_root>vendor/magento/module-theme/view/frontend/ Magento came with two default theme Luma and Blank, you can override any one to create custom theme as per your choice. Overriding Luma Theme Now i am going to override Luma theme, you need to create these two mandatory file along with one optional file as follows. To overriding your custom theme go t