The sub-element's margin-top acts on the outer parent element. Solution: margin-top outer layer

The sub-element's margin-top acts on the outer parent element. Solution: margin-top outer layer

The sub-element's margin-top acts on the outer parent element. solution:
Sometimes, when setting the margin-top attribute of a child element, it is intended to act on the parent element, but the result is that the parent element has the margin-top effect, the following describes how to solve this problem through code examples.
The code example is as follows:

 

<! DOCTYPE html>  
 
 
The above Code meets our requirements. In fact, this is a typical problem of outer margin merging. You can add overflow: hidden to eliminate this phenomenon. We will not discuss it here, for details, refer to the detailed description of margin merging in margin.
 
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