What does ~ mean in css

The ~ operator "universal descendant selector" in CSS is used to match all subsequent siblings of an element. The syntax is selector1 ~ selector2, which means to match the sibling element after selector1, and the element has the selector2 style. It is often used in child element styles, navigation menus, table readability and other scenarios.

The meaning of ~ in CSS

The ~ operator in CSS is called the "universal descendant selector" , used to match all subsequent siblings of an element. Specifically:

• ## Syntax: selector1 ~ selector2
• Meaning: matches all locations in Elements that follow selector1 and have the style selector2, but they must be sibling elements (that is, under the same parent element).

Example:

The following style will add a red border to all paragraph elements that follow an element with the class name "box":

.box ~ p {
  border: 1px solid red;
}

How to use ~ selector?

~ Selectors are typically used to:

• Apply child element styles: Apply styles to specific child elements of a specific parent element.
• Create a navigation menu: Add styles to navigation menu items on hover or active state.
• Create checkboxes and radio buttons: Apply a style to the label of a checkbox or radio button.
• Enhance table readability: Alternately add different colors or backgrounds to table rows.

It should be noted that:

~ The selector can only match subsequent sibling elements, but not parent elements or ancestor elements.
• ~ The selector performs a depth-first search of elements in the document tree, which means it will match child elements first and then sibling elements.

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