How to remove shadow and border from images in blogger

First search the code like this below.

Look line number 397, where change border: 1px solid $(image.border.color); to border: 0px solid $(image.border.color); .

This will remove the border from your image.

As shown below in my blog:

Line number 399, 400,401.

Now delete those lines code,

Lines may vary in your blog code.

Now the code after changes will look like below image.