
There are many collectors of music on stamps who will have items relating to Buddy Holly, but we are concerned only with the final day of his life. Now known as the day the music died, rock 'n' roll was never the same. When the plane went down on that cold February day the 22-year-old star was only just starting out on what seemed destined to be a dazzling career. The exact cause of the crash is uncertain but the pilot and all three passengers were killed as the plane nose-dived through snowy skies into a frozen cornfield. Just after one o’clock the plane left Mason City, Iowa for Fargo, Dakota, but never made its destination. Hoping to save time and keep warm during a long and busy tour of the Midwest in the winter of '59, Buddy Holly chartered a small four-seat aircraft, a Beechcraft Bonanza V tail, to fly onto the next venue with Ritchie Valens and the Big Bopper joining him. His short life is also recalled in the well-known Don Maclean song 'American Pie' and later in the biopic released by Columbia The Buddy Holly Story. In his tragically short career, Buddy Holly visited the UK and Australia, and influenced not only his fellow countrymen but the UK pop bands of the following decade, including the Beatles and the Rolling Stones. Now if I added _module.less file inside my module directory Magento_Checkout/web/css/source/_module.less I'm intending to override my parent themes styling for this module in which case I need to copy ' _module.less' file from my parent theme's module directory and make modification to that file in which case this file will replace parent themes _module.less file altogether.The three rock 'n' roll musicians involved in the tragic and now famous plane crash were, at that time, on the verge of worldwide fame: Magento_Checkout/web/css/source/_extend.less and add/extend module styling in there. checkout module, well you can create an _extend.less file inside your themes module folder e.g. What if you want to extend styles of a module e.g.

Register this file by adding it to the _extend.less file inside your theme directory. _extend.less is the way to extend/modify parent themes styles for example you're happy with your parent theme Luma and just want to change the button styles in your custom theme, all you need to do is create a new file _buttons_extend.less under web/css/source in your custom theme and adjust styles in there. Simple explanation or difference between both:

'desktop' // Sets target device for this false // Sets not to output common styles

'source/_module.less' // Theme 'source/_widgets.less' // Theme widgets

These desktop styles are added to mobile This is the order they are imported in vendor/magento/theme-frontend-blank/web/css/styles-l.less // The only difference I can see between them is _module.less is imported before the responsive library and _theme.less where as _extend.less is imported after them. But Luma uses _module.less when extending the blank theme so that theory has gone out the window. My first thought was it's better to use _module.less when styling a new module, and _extend.less when extending a module. Is there any difference between extending a theme using _module.less and _extend.less? And what is the best practice when extending a module/theme?
