This depends on your project design. According to the design, first consider the layout combined with html+css implementation. Learn the basics. You can also look at UI libraries such as bootstrap mentioned above. This is more commonly used and see what others are doing. How to implement the style, you will know it if you write more
How to write this is completely HTML/CSS basic knowledge. . All I can say is read more books and examples. .
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http://www.bootcss.com/p/boot...
The original poster can use th, td to distinguish the left and right, and then deal with different input sizes and button buttons.
You can use bootstrap to write
Using flexible layout is very simple
This depends on your project design. According to the design, first consider the layout combined with html+css implementation. Learn the basics. You can also look at UI libraries such as bootstrap mentioned above. This is more commonly used and see what others are doing. How to implement the style, you will know it if you write more