The addition of CSS cascading style sheets completes the layout of the interactive web page in the interactive web page layout technology HTML5 +CSS3. The effect of web page optimization is very obvious, and it is also very important to float and clear floating in the web page layout. The four methods of clearing floating has been introduced mainly, in order to achieve the effect of further optimization to compare the advantages and disadvantages of each method from all aspects, and ultimately to make the overall layout of the page optimal. But floating can cause many problems, and it is especially significant to clear the float. There are many ways to clear float, but each method has more or less limitations. And other methods must be found to eliminate these limitations. In contrast, the method of removing floats by pseudo-elements is the most perfect.
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