Cargadores con CSS
https://cssloaders.github.io/
Formas geométricas
https://css-tricks.com/the-shapes-of-css/
Sombras:
https://cssdeck.com/labs/16-box-shadows-to-save-your-time
https://www.hongkiat.com/blog/creative-css-shadows/
UI:
https://uxdesign.cc/how-to-improve-your-product-ui-designers-checklist-58510947e6ab
https://www.refactoringui.com/
100 animaciones increíbles y fáciles de usar:
https://dev.to/afif/another-100-underline-overlay-animations-the-extended-css-collection-574c
https://www.webdesignerdepot.com/2014/05/8-simple-css3-transitions-that-will-wow-your-users/
https://daneden.github.io/animate.css/
https://1stwebdesigner.com/css-effects/
100.000 iconos gratis, nada menos:
