Here is a brief Linux, bash shell, command line keyboard navigation and editing cheatsheet.

Navigation and Deletion

Ctrl-b - Move back one character.
Ctrl-f - Move forward one character.

Ctrl-a - Move to the start of the line.
Ctrl-e - Move to the end of the line.
Alt-f - Move forward a word.
Alt-b - Move backward a word.

Occasions arise when unusual forms of CSS selectors are required in order to uniquely target the desired HTML element within the markup on a website page. However, CSS has solutions for nearly all of the potentially difficult situations that may arise.

The masonry layout block in the morethanthemes.com Drupal implementations integrates with the masonry.js library, and uses Views, with rewrite field output to generate the block content. 

The approach is to use views rewrite, plus the existence of one or the other of the two types of images from which to build the layout. 

This Drupal 8 patch level release includes fixes for numerous minor bugs that few uses may encounter. This release is a refinement for the important Drupal 8.6.0 release, which introduced numerous minor backwards compatible feature enhancements.