Issue Summary

The clickable area for "Delete <source-branch-name> after merging" on the merge pull request dialog is too big. Users may accidentally tick the checkbox, which could result in the deletion of the branch.

This is reproducible on Data Center: (yes)

Steps to Reproduce

• Create a fresh repository in Bitbucket with a master branch and push some commits to the master branch.
• Create another branch(say branch1) and push some changes to this branch.
• Open a PR from branch1 to master.
• Navigate to the PR and click on the merge button. You can check or uncheck the checkbox in the merge pull request dialogue by clicking anywhere in the white area that appears in the same line as the checkbox.

Expected Results

Only the checkbox should have the clickable portion, not the label's complete frame.

Actual Results

The checkbox can be checked or unchecked by clicking on it or elsewhere in the white area. The label's frame is too big and can be seen in the attached screenshot.

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available