CSS tutorials (w3school)
https://www.schoolsw3.com/css/index.php (Русский язык)
https://www.w3schools.com/css/css_intro.asp (English)
https://www.w3school.com.cn/css/index.asp (中文)
css01 CSS Introduction
css02 CSS Syntax
css03 CSS Selectors
css04 CSS Combinators
css05 CSS Pseudo-classes
css06 CSS Pseudo-elements
css07 CSS Attribute Selectors
css08 How To Add CSS
css09 CSS Comments
css10 CSS Colors
css11 CSS RGB Colors
css12 CSS HEX Colors
css13 CSS Backgrounds
css14 CSS Borders
css15 CSS Margins
css16 CSS Padding
css17 CSS Height, Width
css18 CSS Box Model
css19 CSS Outline
css20 CSS Text
css21 CSS Fonts
css22 CSS Icons
css23 CSS Links, Cursors
css24 CSS Lists
css25 CSS Tables
css26 CSS Layout - The display Property
css27 CSS Layout - width and max-width
css28 CSS Layout - The position Property
css29 CSS Layout - The z-index Property
css30 CSS Layout - Overflow
css31 CSS Layout - float and clear
css32 CSS Layout - display: inline-block
css33 CSS Layout - Horizontal & Vertical Align
css34 CSS Opacity / Transparency
css35 CSS Navigation Bar
css36 CSS Dropdowns
css37 CSS Image Gallery
css38 CSS Image Sprites
css39 CSS Forms
css40 CSS Counters
css41 CSS Website Layout
css42 CSS Units
css43 CSS Specificity
css44 CSS The !important Rule
css45 CSS Math Functions