The Beginning theme has to be considered as a blank canvas. This theme is for designer artist. Designers can begin theme designing, web designing without worrying about theme structure, layout and responsiveness as per device width. This theme is for those design artists who want to simply focus on graphic elements, colours, and styling. Very easy to customize without learning any new stuff. Designer don't even need to be understand @media query and various breakpoints for RESPONSIVE, MOBILE design.
Theme developer can use sub-theme (child theme) Instead of editing "Beginning" theme. I create a sample sub-theme Shiv for this purpose at here -https://www.drupal.org/project/shiv
Share buttons for Drupal including AddToAny's universal sharing button, Facebook, Mastodon, Bluesky, Pinterest, WhatsApp, Reddit, SMS, email, and many more.
Large vector share buttons use AddToAny SVG sharing icons. AddToAny vector icons load efficiently, are mathematically precise, scalable to any size, and stunning on High-PPI screens such as Retina displays.
Block Class allows users to add classes to any block through the block's configuration interface. By adding a very short snippet of PHP to a theme's block.tpl.php file, classes can be added to the parent <div class="block ..."> element of a block. Hooray for more powerful block theming!