Use jQuery to dynamically add small ads and jquery to dynamically add

Use jQuery to dynamically add small ads and jquery to dynamically add

When you browse a website, some websites always place advertisements in the lower right corner, upper left corner, or other places.

I tried to create one by myself using jQuery. The Code is as follows. If something is wrong, please kindly advise.

1 <! DOCTYPE html> 2 
As follows:

 
I have the following thoughts on this effect:
1. you can add a timer, countdown to '5 s shutdown ', and '4s shutdown' to tell the user that the ad is only temporarily placed and automatically closed after 5 S, which enhances user experience, we all know that when Browsing some websites, advertisements are always wandering in front of you, and the user experience is definitely not very good, which can strike a good balance between advertising customers and user experience;
2. The reason for choosing orange as the background color is because orange is warm and personal experience. If the background color of an advertisement is warm, you are more willing to let him stay for some time. The background color is cooler than the background color;
3. Of course, this is just a small code. After the contents are completed, they can be encapsulated and used more conveniently.