In Depth Guide : Acquia Certified Developer Drupal
  • IN DEPTH GUIDE: ACQUIA CERTIFIED DEVELOPER - DRUPAL 8 EXAM
  • Test Format
  • Domain 1.0: Fundamental Web Development Concepts
    • 1.1 Demonstrate knowledge of HTML and CSS
    • 1.2 Identify Javascript and jQuery programming concepts
    • 1.3 Demonstrate the use of Git for version control
  • Domain 2.0: Site Building
    • 2.1 Demonstrate ability to create and configure Content Types with appropriate fields and field sett
    • 2.2 Demonstrate ability to configure Display Modes for building custom form and view modes for core
    • 2.3 Demonstrate ability to create and use Taxonomy vocabularies and terms for classification and org
    • 2.4 Demonstrate ability to configure Block types, manage Blocks library and configure Block layouts
    • 2.5 Demonstrate ability to build main and alternative navigation systems by using Menus
    • 2.6 Demonstrate ability to create and configure Views for building content list pages, blocks and fe
    • 2.7 Demonstrate ability to use Configuration Management capabilities for exporting site configuratio
    • 2.8 Demonstrate ability to build multilingual websites using core multilingual capabilities
    • 2.9 Demonstrate ability to build RESTful web application using core Web Services capabilities
  • Domain 3.0: Front end development (theming)
    • 3.1 Given a scenario, demonstrate ability to create a custom theme or sub theme.
    • 3.2 Demonstrate knowledge of theming concepts
    • 3.3 Demonstrate ability to use Twig syntax
    • 3.4 Demonstrate ability to build or override Twig templates for defining layout content
    • 3.5 Demonstrate ability to write template pre-process functions for overriding custom output
  • Domain 4.0: Back end development (coding)
    • 4.1 Demonstrate ability to write code using core and Object Oriented PHP
    • 4.2 Demonstrate ability to develop Custom Modules using Drupal API for extending Drupal functionalit
    • 4.3 Demonstrate ability to store and retrieve data using code
    • 4.4 Demonstrate ability to work with other essential APIs
    • 4.5 Demonstrate ability to write code using Drupal Coding Standards
    • 4.6 Demonstrate ability to analyze and resolve site performance issues arising from site configurati
    • 4.7 Demonstrate ability to analyze and resolve security issues arising from site configuration or cu
  • Other Resources
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  • HTML and CSS
  • CSS and What is CSS Specificity?
  • Other Resources
  1. Domain 1.0: Fundamental Web Development Concepts

1.1 Demonstrate knowledge of HTML and CSS

PreviousDomain 1.0: Fundamental Web Development ConceptsNext1.2 Identify Javascript and jQuery programming concepts

Last updated 6 years ago

HTML and CSS

Review CSS selector precedence.

HTML- HyperText Markup Language and CSS - Cascading Style Sheets as defined by are the two core fundamental technologies for building websites.

HTML is the structure and CSS defines the visual layout.

With HTML, authors describe the structure of pages using markup. The elements of the language label pieces of content such as “paragraph,” “list,” “table,” and so on.

CSS and What is CSS Specificity?

is the order in which CSS styles will apply to your HTML markup.

Precedence is evaluated according to these rules:

  • Inline CSS takes precedence over any other CSS (outdated form of styling, typically still used in email templating).

  • More specific selectors take precedence over less specific ones.

  • ID selectors take precedence over class selectors.

For Example:

  <header id="header" class="header head-section" role="banner" aria-label="Site header">
        <div id="page" class="section layout-container clearfix"> Header Text </div>
  </header>

  • #header would take precedence over .head-section (because ID selectors take precedence over class selectors)

  • #header.head-section would take precedence over #header (because more specific selectors take precedence over less specific ones)

Other Resources

W3C,
CSS selector precedence
Code Academy Hands on Learning course for HTML and CSS
W3C definition of Html and CSS