Step 1: Download and Restore This Theme from blogger Dashboard.
Step 2: Now Go to your blogger pages and create a page where you want to add timer. After writing full blog, save this page and open this page and copy the last part of page. If you can't understand then see example below.
Example
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Your Page's full Url:
https://sgu-short.blogspot.com/p/youtube-shorts-tricks.html
Copy: p/youtube-shorts-tricks.html
Step 3: Now Open Layout and click Edit pencil of "First Settings Widget".
Step 4: Now replace "p/youtube-shorts-tricks.html" with your own page url's last part which you copied in Step 2.
Step 5: Now add this code in that page which you just created. Code is given below.
<div id="output"></div>
<div id="output"></div>
Conclusion : Ok now your blogger 1 page shortener is ready for your own use. Now you short any link from hompage with simply and also You can add password to open link from your site's homepage. Enjoy Now.