Use the :nth-of-type pseudo-class selector to select styles at specific positions within elements of the same type.

Use the :nth-of-type pseudo-class selector to select the style of a specific position in elements of the same type

In CSS, we often need to select the style of the same type of elements. Set styles at specific positions in an element. For example, every third element in a list requires a special style. In this case, you can use the :nth-of-type pseudo-class selector to achieve this purpose.

:nth-of-type pseudo-class selector can select the target element based on the element's type and position. Its syntax is as follows:

:nth-of-type(n)

where n is a parameter indicating the position, which can be a specific number or a keyword, such as odd. Odd positions, even represents even positions.

The following is a specific example:

HTML code:

<ul>
  <li>第一个元素</li>
  <li>第二个元素</li>
  <li>第三个元素</li>
  <li>第四个元素</li>
  <li>第五个元素</li>
  <li>第六个元素</li>
  <li>第七个元素</li>
  <li>第八个元素</li>
</ul>

CSS code:

li:nth-of-type(3n) {
  color: red;
}

In the above code, we use:nth-of- type(3n) selector to select every third element in the list and set the color to red. According to the rules of this selector, this style will be applied to the third, sixth, and ninth elements.

If we want to select elements at odd positions, we can use the :nth-of-type(odd) selector. The sample code is as follows:

CSS code:

li:nth-of-type(odd) {
  background-color: lightgray;
}

This way , the background color of odd-numbered elements in the list will be set to light gray.

In addition to applying the :nth-of-type selector in lists, it can also be used for other types of elements, such as paragraphs, titles, etc.

In short, using the :nth-of-type pseudo-class selector can achieve the purpose of styling specific positions in elements of the same type. By setting specific parameters we can select the desired location and apply a specific style to it. This is very useful when dealing with the styling of a large number of similar elements, improving development efficiency.

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