You might take a basic fundamental HTML/CSS course. It covers things like <div>s, classNames, and many more such basics of web page construction.
You might also look for an instruction manual for the framework that you have chosen to use.
And finally, frequently during the process of developing a web page, examine the code in the HTML and CSS validators. IF used frequently, they are a tremendous help when it comes to identifying problems before they become catastrophes that require a mountain of rework:
Forum POSTING BASICS:
Forum Posting Basics
https://jigsaw.w3.org/css-validator/
EDIT: A personal note. Look at the layout of your code in your browser window. It is almost randomly indented. Such code is difficult to read. Throw in 64 errors identified by the HTML validator and I’m not usually interested in taking the time to indent it just so I can work on it for someone else. That’s just me. Fortunately, everyone doesn’t feel the same.
https://validator.w3.org/nu/?doc=https%3A%2F%2Fenglish.best%2Finterview-with-rod-hinn%2F