Book Image

Web Developer's Reference Guide

By : Joshua Johanan, Talha Khan, Ricardo Zea
Book Image

Web Developer's Reference Guide

By: Joshua Johanan, Talha Khan, Ricardo Zea

Overview of this book

This comprehensive reference guide takes you through each topic in web development and highlights the most popular and important elements of each area. Starting with HTML, you will learn key elements and attributes and how they relate to each other. Next, you will explore CSS pseudo-classes and pseudo-elements, followed by CSS properties and functions. This will introduce you to many powerful and new selectors. You will then move on to JavaScript. This section will not just introduce functions, but will provide you with an entire reference for the language and paradigms. You will discover more about three of the most popular frameworks today—Bootstrap, which builds on CSS, jQuery which builds on JavaScript, and AngularJS, which also builds on JavaScript. Finally, you will take a walk-through Node.js, which is a server-side framework that allows you to write programs in JavaScript.
Table of Contents (22 chapters)
Web Developer's Reference Guide
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
9
JavaScript Expressions, Operators, Statements, and Arrays
Index

Drop shadows


There are three ways to create the effect of depth: using lights, shadows, or both.

Let's see how we create box shadows for our containers.

box-shadow

The box-shadow CSS property creates one or several shadows on an element, and it looks like this:

box-shadow: 10px 10px 13px 5px rgba(0, 0, 0, .5) inset;

Description

The box-shadow property supports three, four, five, or six values in the same declaration: four length values, one color value, and the keyword inset.

Length values

We use one of the following units when we use the length values: px, em, in, mm, cm, vw, and so on.

The four length values are as follows:

  • The first value is for the horizontal offset of the shadow. Negative values are valid. This value is required.

  • The second value is for the vertical offset of the shadow. Negative values are valid. This value is required.

  • The third value is for the blur radius of the shadow. The larger the value, the more spread the shadow becomes, but also more translucent. Negative values are...