v1.0.3_Recommend some Vivaldi themes

▶️ Youtube Video: The key step to making Vivaldi look like Arc, Choosing a theme~

1. This version mainly addresses a minor issue in Vivaldi 6.8 update—Issue#20. (Special thanks to @NextEcho for providing CSS solutions, although I did not entirely adopt their method in the end).
2. In previous versions, I created a few gradient Vivaldi themes to mimic the Arc style and included them in the project files for everyone to use. A few days ago, I explored the Themes section on the Vivaldi Community and discovered many suitable themes. I realized there was no need to go out of my way to create new themes, so I tried some of the popular themes in the Community and selected a few that I found fitting. Here’s how you can use them:
   1. Open the recommended theme link.
   2. Click on the theme name to go to its page.
   3. Click the install button below the theme.