External style sheet
An external style sheet is simply a text file containing CSS rules and saved with a file extension of .css. This file is then linked into all web pages that want to implement the styles defined within the external style sheet through the use of the HTML <link> tag. This is a commonly used method for splitting out the styling from the main web page and gives you the ability to change the look of an entire website through the use of a single external style sheet.
These are the basic concepts that you need to understand with regard to CSS. You can use CSS to define styles for pretty much anything on a web page including backgrounds, text, fonts, links, lists, images, tables, maps, and any other visible objects.
That's a lot to remember! Just keep in mind that style rules defined further down in the hierarchy override style rules defined higher in the hierarchy.
推薦閱讀
- Learn ECMAScript（Second Edition）
- Designing Machine Learning Systems with Python
- The Android Game Developer's Handbook
- 計算機圖形學編程（使用OpenGL和C++）（第2版）
- Learning Spring 5.0
- 架構(gòu)不再難（全5冊）
- Spring實戰(zhàn)（第5版）
- R Deep Learning Cookbook
- 微信小程序項目開發(fā)實戰(zhàn)
- Learning Salesforce Einstein
- Hands-On Automation Testing with Java for Beginners
- Spring Boot企業(yè)級項目開發(fā)實戰(zhàn)
- Mastering Android Development with Kotlin
- Scala Reactive Programming
- Vue.js應(yīng)用測試