Added citation styling

[SociableSteve]

Added styling for the citation block. Closes #173

Looks like:

[github-actions]

Page Speed results for http://pr-preview-bioconductor-pr196.s3-website-us-east-1.amazonaws.com using desktop

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Summary

URL: pr-preview-bioconductor-pr196.s3-website-us-east-1.amazonaws.com
Strategy: desktop
Performance: 71

Field Data

The Chrome User Experience Report does not have sufficient real-world speed data for this page.

Lab Data

Cumulative Layout Shift | 0.001
First Contentful Paint | 2.5s
Largest Contentful Paint | 2.6s
Speed Index | 2.5s
Total Blocking Time | 0ms

Opportunities

No opportunities provided.

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Page Speed results for http://pr-preview-bioconductor-pr196.s3-website-us-east-1.amazonaws.com using mobile

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Summary

URL: pr-preview-bioconductor-pr196.s3-website-us-east-1.amazonaws.com
Strategy: mobile
Performance: 61

Field Data

The Chrome User Experience Report does not have sufficient real-world speed data for this page.

Lab Data

Cumulative Layout Shift | 0
First Contentful Paint | 6.2s
Largest Contentful Paint | 7.1s
Speed Index | 6.5s
Total Blocking Time | 50ms

Opportunities

No opportunities provided.

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[github-actions]

Running axe-core 4.7.2 in chrome-headless