Some styles of CSS
are inherited, so what is inheritance? Inheritance is a rule that allows styles to be applied not only to a specific html tag element, but also to its descendants. For example, the following code: If a certain color is applied to the p tag, this color setting applies not only to the p tag, but also to all sub-element text in the p tag, where the sub-element is the span tag.
p{color:red;}
<p>三年级时，我还是一个<span>胆小如鼠</span>的小女孩。</p>It can be seen that the text in p and the text in span in the result window on the right are set to red. But note that some CSS styles are not inherited. For example, border:1px solid red;
p{border:1px solid red;}
<p>三年级时，我还是一个<span>胆小如鼠</span>的小女孩。</p>In the above example, the function of the code is only to set the border to 1 pixel, red, and solid border line for the p tag, but it has no effect on the sub-element span. of.
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>继承</title>
<style type="text/css">
p{color:red;}
span{border:1px solid blue;
color:#aa2355;}
p{border:1px solid red;}
</style>
</head>
<body>
<h1>勇气</h1>
<p class="first">三年级时，我还是一个<span>胆小如鼠</span>的小女孩，上课从来不敢回答老师提出的问题，生怕回答错了老师会批评我。就一直没有这个勇气来回答老师提出的问题。学校举办的活动我也没勇气参加。</p>
<p id="second">到了三年级下学期时，我们班上了一节公开课，老师提出了一个很<span>简单</span>的问题，班里很多同学都举手了，甚至成绩比我差很多的，也举手了，还说着："我来，我来。"我环顾了四周，就我没有举手。</p>
</body>
</html>