Which tags in HTML have borders?

Bordered tags in HTML: 1. input tag, used to specify input fields in which users can enter data; 2. hr tag, used to insert a horizontal line; 3. textarea tag, used to define A multi-line text input control; 4. Select tag, used to create single-select or multi-select menus.

The operating environment of this tutorial: Windows 7 system, CSS3&&HTML5 version, Dell G3 computer.

Tags with borders in HTML:

##1、input

Labels specify input fields into which users can enter data.

<form action="#">
	用户名: <input type="text" name="name"><br>
	密　码: <input type="password" name="password"><br><br>
	<input type="submit" value="提交">
</form>

##2. hr

---

tag defines theme changes in HTML pages ( such as topic transfer) and displayed as a horizontal line. The

---

element is used to separate content in an HTML page (or to define a variation).

Example:

<h1>HTML</h1>
<p>HTML 是用于描述 web 页面的一种语言。</p>
<hr>
<h1>CSS</h1>
<p>CSS 定义如何显示 HTML 元素。</p>

It can be seen that it is just a black line, which is not beautiful at all, let alone using

---

to make the page beautiful. This requires using css border to set the style of hr.

For example, set the thickness (bold) and color of hr

<hr style="border: 5px solid red;"/><!--修改的样式-->
<br />
<hr /><!--默认的样式-->

##3, textarea

tag defines a multi-line text input control.

The text area can hold an unlimited amount of text, and the default font for the text is a fixed-width font (usually Courier).

<textarea rows="10" cols="30">我是一个文本框。</textarea>

4. select

The select element can create a single-select or multi-select menu.

The tag in the element is used to define the options available in the list.

<select>
  <option value ="volvo">Volvo</option>
  <option value ="saab">Saab</option>
  <option value="opel">Opel</option>
  <option value="audi">Audi</option>
</select>

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