In the process of CSS webpage layout learning, what software is used to help?

What software should I use for CSS webpage layout development? This is a very common problem. It may often confuse new friends. Let's talk about this question today. If you have any ideas, Let's brainstorm.
Many of our friends use DreamWeaver for development. DreamWeaver is one of the three swordsmen. In the traditional table layout, the visual environment makes it easy for us to edit webpages, set the function panel to achieve the desired effect. Although it simplifies operations and facilitates our production, we have lost so many things that some friends have been working for a few years, but they do not understand the HTML code, I don't understand what the labels really mean.
Css web page layout is to establish a WEB page that complies with the WEB standards, and the performance, content, and behavior are separated. We need to simplify our code to make it more efficient. The application of DreamWeaver often adds a lot of junk code, which is not simplified enough. One sentence of code can be done, and DreamWeaver may come up with four or five sentences to help you. More importantly, if a project is completed by a multi-person team, the code produced by DreamWeaver will often make other members feel tricky and have a bunch of code, there are no clear definitions and rules, and there is no way to start and identify them. This is similar to the table layout code.
Some may say that we can use the DreamWeaver code prompt function to assist in encoding. For example, if we type "F" in the code, DreamWeaver will prompt some styles related to "F", which is a good result for friends with weak English skills. This function can be used, but please note that it should not be dependent. If you arrive at a new organization, join a new project team, or handle some emergency problems and leave the DreamWeaver environment, you will soon be stunned, I have no idea how to write styles. In addition, your understanding of the meaning of the code is not clear enough for a long time.
If you want to know CSS well, you want to be very skilled in CSS webpage layout. We recommend that you discard all the auxiliary software and use notepad for development. If you feel difficult or cannot remember some words. It doesn't matter. Put a reference list at hand, one line at a time, one word at a time, and one letter at a time. One or two days later, you will feel comfortable. After a week or two, you will be fully skilled. Practice has proved that this payment is worthwhile. You can fully understand what the code is. In order to reduce the number of letters, you will try your best to streamline your code, use few codes to implement the same functions and style settings. In time, your code will be standardized, and you will be closer to the master.
When we are skilled, we can use the relevant auxiliary software to improve work efficiency and make development faster. For example, the most common DreamWeaver, Notepad ++, or TopStyle development tools.