Alignment/ Not center 'Edit' text of button on detail view of Opportunity

We have 7.13 version of CRM. Now, when we go to Opportunity module.

The Edit button does not have proper alignment. Where could I change code to make it center and align properly?


You could see in above image, Edit text is not centered within the button.

Thanks in an advance!

Update style.css with below code.

#detail_header_action_menu li.sugar_action_button a#edit_button {
    margin: 0px 10px 5px 9px

You could move this file to custom/themes/ folder.