Css selector and css3 Selector

Css selector and css3 Selector

I. class selector: "." class selector {css style code}

1. Use the appropriate tag to mark the content to be modified.

<Span> content </span>

2. <span class = "stress"> content </span>

3. stress {color: red}

Note: The class selector can start with an English dot without any name.

Ii. ID Selector

1. Use the appropriate tag to mark the content to be modified.

<Span> content </span>

2. <span id = "stress"> content </span>

3. # id {color: red}

Id #

Note: The class selector can set multiple styles for an element in an HTML file, while the ID selector can only set the element once. It is also the only time.

3. Element Selector.

The element selector selects any HTML elements on the webpage matching the selector, regardless of their position in the document.

For example: p {color: bule ;}