A Great CSS3 Generators
Gradients: https://www.colorzilla.com/gradient-editor/
Text-Shadows, Box Shadows, Rounded Corners – https://css3gen.com/
More for round corners – https://www.cssportal.com/css3-rounded-corner/
A place to start with buttons – https://www.cssbuttongenerator.com/
Background patterns (not supported in IE8, but they work for everything else) – https://info.patternizer.com/docs
Cool Tutorial for a CSS Thermometer – https://www.suenovotny.com/blog/2011/03/dynamic-thermometer-with-css-and-php.php
Dynamic Charts & Graphs with Google Chart Tools:
https://google-developers.appspot.com/chart/interactive/docs/gallery