https://css-tricks.com/lets-look-50-interesting-css-properties-values/

• css
• properties
• values
• tips
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https://hakibenita.com/sql-tricks-application-dba

• sql
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• performance
• postgresql

http://www.magazineduwebdesign.com/conseils/guides/design-newsletter-7-hacks-pour-des-emails-qui-convertissent/

• emails
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• responsive
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• newsletter

http://sahandsaba.com/thirty-python-language-features-and-tricks-you-may-not-know.html

• python
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http://www.sohtanaka.com/web-design/css-border-tricks-tutorial/

• css
• css3
• border
• tutorial
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http://www.smashingmagazine.com/2008/09/11/75-really-useful-javascript-techniques/

• javascript
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• js