Question

我希望对1页上的元素进行样式设置，而不会影响其他页面上的相同元素。

我对每个元素都有class="homepage"。

有更好的方法吗？

为简单起见，这是该页面上的DIV。

＆＃13;

h1.homepage, p.homepage, li.homepage {
  margin-left: 200px;
}
p.homepage, li.homepage {
  font-size: 20px;
}

＆＃13;

<div>
    <h1 class="homepage">Angular 2 with TypeScript for Beginners</h1>
    <br> 
    <p class="homepage">This project teaches what single page applications (SPA) are and how to build them.</p>
    <p class="homepage">This is a real-world application. A Single Page Application with 2 pages.</p>
    <ul class="homepage">
        <li class="homepage">Page 1 - is a list of customers from a RESTful api with CRUD operations.</li>
        <li class="homepage">Page 2 - is a list of posts from a RESTful api with pagination and search opeartions as well as master/detail views</li>
    </ul>
    <br>      
    <p class="homepage">Angular 2 is the next big thing. It's one of the leading frameworks for building modern, scalable, cross-platform apps.</p>
    <p class="homepage">It’s a leading framework for building JavaScript heavy applications. Often is used in building Single Page Applications (SPA). In a standard web app, when we click on a link, the entire page is reloaded. In SPA, instead of reloading the entire page, we replace the view that is in the content area with another view. It also keeps track of history so if the user navigates using back and forward buttons, we reinsert the application in the right state. This is a fast and fluid experience. Gmail is an example of a SPA.</p>      
    <br>  
    <p class="homepage">TypeScript is a superset of JavaScript, meaning any valid JavaScript code is valid TypeScript. TypeScript brings many useful features to JavaScript that are missing in the current version of JavaScript. We get classes, modules, interfaces, properties, constructors, access modifiers (e.g. public/private), IntelliSense and compile-time checking. So, we can catch many programming errors at compile-time.
    </p>
    <p class="homepage">Angular 2 is written in TypeScript. Plus, most of their documentation is in TypeScript. And for that reason, TypeScript will be the dominant language in building Angular 2 apps.
    </p>
</div>

＆＃13;

Answer 1

有一个更好的选择。

使用类环绕页面并使用后代选择器：

.homepage h1, .homepage p, .homepage li
{
  margin-left: 200px;
}

.homepage p, .homepage li
{
  font-size: 20px;
}

<div class="homepage">
    <h1>Angular 2 with TypeScript for Beginners</h1>
    <br> 
    <p>This project teaches what single page applications (SPA) are and how to build them.</p>
    <p>This is a real-world application. A Single Page Application with 2 pages.</p>
    <ul >
        <li>Page 1 - is a list of customers from a RESTful api with CRUD operations.</li>
        <li>Page 2 - is a list of posts from a RESTful api with pagination and search opeartions as well as master/detail views</li>
    </ul>
    <br>      
    <p>Angular 2 is the next big thing. It's one of the leading frameworks for building modern, scalable, cross-platform apps.</p>
    <p>It’s a leading framework for building JavaScript heavy applications. Often is used in building Single Page Applications (SPA). In a standard web app, when we click on a link, the entire page is reloaded. In SPA, instead of reloading the entire page, we replace the view that is in the content area with another view. It also keeps track of history so if the user navigates using back and forward buttons, we reinsert the application in the right state. This is a fast and fluid experience. Gmail is an example of a SPA.</p>      
    <br>  
    <p>TypeScript is a superset of JavaScript, meaning any valid JavaScript code is valid TypeScript. TypeScript brings many useful features to JavaScript that are missing in the current version of JavaScript. We get classes, modules, interfaces, properties, constructors, access modifiers (e.g. public/private), IntelliSense and compile-time checking. So, we can catch many programming errors at compile-time.
    </p>
    <p>Angular 2 is written in TypeScript. Plus, most of their documentation is in TypeScript. And for that reason, TypeScript will be the dominant language in building Angular 2 apps.
    </p>
</div>

Answer 2

是什么阻止您使用不同的样式表（例如，对于每个其他页面使用general.css，而对于此特定页面使用homepage.css）？如果您不想打扰多个css文件，您可以仅向您的div声明该类，并仍然使用它来区分您的CSS。仅作为一个例子：

<style>
   span {
      background-color: red;
  }

  div.homepage span {
    background-color: blue;
  }
</style>

<div>
  <span>span in normal div</span>
</div>
<div class="homepage">
  <span>span in special div</span>
</div>

多页CSS - 每个页面中不同的样式用于相同的元素

2 个答案: