• CSS – Introduction
• CSS – Basics
• CSS – Include CSS File to HTML
• CSS – ID and Class
• CSS – Cascading Order
• CSS – Selector
• CSS – Pseudo Classes
• CSS – Colors
• CSS – Gradients
• CSS – Units
• CSS – Background
• CSS – Border
• CSS – Margin and Padding
• CSS – Height and Width
• CSS – Outline
• CSS – Display and Visibility
• CSS – Position
• CSS – Overlapping Elements
• CSS – Overflow
• CSS – Float
• CSS – Clear and Clearfix
• CSS – Left and Right
• CSS – Transform
• CSS – Opacity / Transparency
• CSS – text-shadow
• CSS – box-shadow
• CSS – object-fit
• CSS – Counters
• CSS – Variables
• CSS – Fonts
• CSS – Text Formatting
• CSS – Graphics
• CSS – Links
• CSS – Lists
• CSS – Tables
• CSS – Horizontal & Vertical Align
• CSS – Image Sprite
• CSS – Transitions
• CSS – 2D Transforms
• CSS – 3D Transforms
• CSS – Animations
• CSS – Media Queries
• CSS – Flexbox

Variables

To declare a CSS variable you will have to add a double dash before the name of that var.

body {
    --english-green-color: #1B4D3E;  
}

Now, in order to use the value of the CSS variable, we can use the var(…) function.

.my-green-component{
    background-color: var(--english-green-color);
}

The easiest way to manage your CSS vars is by declaring them into the :root pseudo-class.

:root{
    --english-green-color: #1B4D3E;
}