Full analysis of HTML and CSS linkage-HTML Tutorial-php.cn

Full analysis of HTML and CSS linkage

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Release： 2024-04-09 13:54:01

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HTML and CSS linkage can create interactive and user-friendly web pages by using HTML to define the page structure, and then using CSS for styling and layout. The linkage steps are as follows: Use the <link> tag to link the CSS to the HTML document. Use selectors to select specific HTML elements in CSS. Apply style properties to set text, colors, borders, and more.

HTML 与 CSS 联动全解析

Full analysis of HTML and CSS linkage

Introduction:

HTML and CSS They are two essential technologies in web development. HTML defines the structure of the page, while CSS is responsible for styling and layout. Linking these two technologies can create interactive and user-friendly Web pages.

HTML Basics:

HTML uses tags to define different types of elements, such as headings, paragraphs, and lists. These tags are interpreted by the browser to render the page on the screen. For example:

<h1>这是标题</h1>
<p>这是一段文本</p>
<ul>
  <li>列表项 1</li>
  <li>列表项 2</li>
</ul>

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CSS Basics:

CSS uses selectors to select specific elements and apply styles. Styles can include attributes such as color, font, and border. For example:

h1 {
  color: red;
}

p {
  font-size: 12px;
}

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HTML and CSS linkage:

To link HTML and CSS, you can use the <link> tag, as shown below:

<head>
  <link rel="stylesheet" href="style.css">
</head>

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This will load an external CSS file named style.css.

Practical case:

Let’s create a simple web form to collect user input.

<h1>用户注册</h1>
<form>
  <label for="name">姓名：</label>
  <input type="text" name="name">
  <br>
  <label for="email">邮箱：</label>
  <input type="email" name="email">
  <br>
  <input type="submit">
</form>

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form {
  background-color: #f0f0f0;
}

label {
  display: block;
  margin-bottom: 5px;
}

input[type="text"] {
  width: 100%;
  padding: 5px;
  border: 1px solid #ccc;
}

input[type="email"] {
  width: 100%;
  padding: 5px;
  border: 1px solid #ccc;
}

input[type="submit"] {
  background-color: #008000;
  color: white;
  padding: 5px 10px;
  border: none;
}

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In our HTML code, we define a form with two input fields (name and email) and a submit button. In our CSS code, we applied styles to provide the background color of the form, the text alignment of the labels, and the borders of the input fields.

Running this code will create a user registration form in the browser, styled according to our CSS requirements.

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