By default all the blogger post titles are appear at the top left corner side of the post. You can make it appear to be at the center by following the bellow steps.
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1. Sign in to your blogger and choose your blog.
2. Click on the template option at the left bottom side of the blogger dashboard.
3. Now click "Edit html".
4. Now tick the "Expand widget templates" option.
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1. Sign in to your blogger and choose your blog.
2. Click on the template option at the left bottom side of the blogger dashboard.
4. Now tick the "Expand widget templates" option.
5. Now click ctrl + f and search the following component.]]></b:skin>
6. Replace it with h3.post-title { text-align:center; }
]]></b:skin> 7. Preview the template and if you find it better for you, then save the template.