To look like the screenshot below this is that,

Here's how to add share button in blogger:
1. Log in to blogger > Template > Edit HTML > Find the code below and then select the second one in the markup post.
2. Then copy the code below right after the code mentioned above,
3. Now just before before]]> </ b: skin> paste the bellow code
4. Save the template, finally you done it.
Similarly you done adding share button for blogger.
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