The magic of HTML tag fieldset

In the actual production of web pages, we sometimes want this effect:

Maybe we can implement it through pictures, but there is a tag in html that can easily help us to implement it. It is the<fieldset>tag.

Fieldset label -- group the form

In the form form, we can group and classify the information in the form. For example, in the form of the registration form, we can divide the registration information into:

Basic information (generally required)

Details (generally optional)

How can we achieve it better? We can consider adding the following two tags to the form form:

Fieldset: group forms. A form can have multiple fieldsets.

Legend: describe the content description of each group.

example:

Css stylesheet:

The effect is as follows: