After coming across a code snippet on Twitter, I saw the following:
div::after {
-webkit-transform: rotate(2deg);
}
div ~ div {
-webkit-transform: rotate(0deg);
}
Can someone explain what this code does?
After coming across a code snippet on Twitter, I saw the following:
div::after {
-webkit-transform: rotate(2deg);
}
div ~ div {
-webkit-transform: rotate(0deg);
}
Can someone explain what this code does?
In CSS3, the double colon was introduced to replace single-colon selectors for pseudo-elements. This change was made to clearly differentiate between pseudo-classes and pseudo-elements. While the single-colon syntax is still acceptable for pre-CSS3 selectors, it's recommended to use the double-colon syntax for newer implementations. For example, :after represents a pseudo-class, while ::after represents a pseudo-element.
A new selector known as the general sibling selector was added in CSS3, with the tilde character (~) used as the combinator. This selector allows you to target elements that are siblings of a specific element. For instance, you can match a p element if it's a sibling of an h2 element using this selector:
The tilde symbol (~) functions as the siblings selector
h2 ~ p { color:red; }
For instance, using the CSS above would turn the paragraphs red in the following code snippet:
<h2>Heading</h2>
<p>The selector above matches this paragraph.</p>
<p>The selector above matches this paragraph.</p>
In contrast, the double colons (::) are employed for ::before and ::after pseudo-elements. When combined with the content: property, you can insert an icon before each link, such as in the example below:
a::before { content:url(link.png); }
In CSS3, the :: symbol is utilized for defining pseudo elements.
The ~ in CSS3 represents the general sibling combinator, which is used to target elements that come after another element at the same level.
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