Here's the tutorial on how to make rounded for picture post in Blogger Platform. Add Rounded corners to your photos,Images.
See the image below: The demo
If you're using the old Blogger interface: Go to Dashboard - Design - Edit HTML - Back Up (Download Full Template) -
If you're using the new Blogger interface: Go to Dashboard - Template - Backup/Restore - Download Full Template - Close - Edit HTML - Proceed -
Find for /* Posts ----------------------------------------------- */ - paste the following code directly below this line:
.post img, .post a img {
-moz-border-radius: 10px !important;
-webkit-border-radius: 10px !important;
-goog-ms-border-radius: 10px !important;
border-radius: 10px !important;
}
