How to set horizontal dividing line in web front-end

In web development, setting horizontal dividing lines is a common requirement, which can make the page content clearer. In front-end development, we can use CSS to set the horizontal dividing line, and adjust its style and position as needed.

1. Use CSS to set horizontal dividing lines

In CSS, you can use the border attribute to set horizontal dividing lines. The specific implementation method is as follows:

hr {
  border: none; 
  border-top: 1px solid black; /*设置上边框的样式，颜色可以根据需要自行更改*/
  margin: 0px; /*设置边距，避免产生额外的间隔*/
}

Use this code snippet to create a default style horizontal dividing line in an HTML document. You can adjust the style of the horizontal dividing line by changing the style of border-top in CSS.

If you need to set the length of the dividing line, you can use the width attribute, as follows:

hr {
  width: 50%; /*分割线宽度，根据需要自行调整*/
  height: 2px; /*分割线高度，根据需要自行调整*/
  background-color: black; /*分割线颜色，根据需要自行调整*/
  border: none; 
  margin: 0px; 
}

2. Set the position of the horizontal dividing line

In addition to setting the style of the horizontal dividing line , its location also needs to be considered. If you need to place a horizontal dividing line between text, you can add a horizontal dividing line before the text that needs to be divided. If you need to place the horizontal dividing line in the middle of the page, you need to place it in the middle of the corresponding container.

Set horizontal dividing lines between texts, you can insert hr tags in HTML, as follows:

<p>段落文本。</p>
<hr>
<p>其他段落文本。</p>

Set horizontal dividing lines in containers, you can add hr tags in the corresponding containers, And set the style of the container. As follows:

<div>
  <p>此处是容器的内容。</p>
  <hr>
</div>

.container {
  text-align: center; /*设置内容居中*/
}

3. Conclusion

The above is the basic method of using CSS to set horizontal dividing lines in the Web front-end. In addition to the methods introduced above, you can also set the dividing line by using pseudo elements, background images, etc. Come and try it out!

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