92 - styles for primary and secondary buttons

[andreituicu]

Please always provide the GitHub issue(s) your PR is for, as well as test URLs where your change can be observed (before and after):

Fix #92

Test URLs:

• Before: https://main--servicenow--hlxsites.hlx.live/drafts/tuicu/buttons
• After: https://buttons--servicenow--hlxsites.hlx.live/drafts/tuicu/buttons

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Hello, I'm the AEM Code Sync Bot and I will run some actions to deploy your branch and validate page speed. In case there are problems, just click a checkbox below to rerun the respective action.

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Commits

* [20e6d46](https://github.com/hlxsites/servicenow/pull/199/commits/20e6d465dac16e9285e400ba341274c371cf4ed8) :white_check_mark: (latest) * [07500ab](https://github.com/hlxsites/servicenow/pull/199/commits/07500ab19ffc13826031e334dda0904565cf9a82) :white_check_mark:

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