Below I have given a demo that will help you to know how it was created. In this demo section, you will find the required source code. You can copy that source code directly and use it in your work.
As you can see above, this is a simple countdown timer with a 30-minute countdown timer. The countdown will begin as soon as you load the webpage. The problem is, there are no control buttons that allow you to turn off the countdown.
But before that, I have shared many more designs where there are different control buttons. However, those designs are relatively difficult to make. There will be a thirty-minute countdown but you can change this time to your liking.
The countdown will start when you open this project. After 30 minutes the countdown will end and a message will be displayed. You can change this message to suit your needs.
You copy the entire HTML code and add it to your HTML file(index.html). Here is the basic structure required for HTML code.
The following codes are the CSS codes used to design the 30 Minutes Countdown Timer. I have used very little code here to design. You copy the entire CSS code and add it to your CSS file(style.css).
If there is any problem, you can let me know by commenting. Earlier I shared many more tutorials where I showed step-by-step how to create countdown time.