Gain insights into advanced CSS concepts, delve into responsive design, explore animations, learn practical projects, and discover powerful tools. Perfect for backend engineers and budding developers.

My Goal is to take you from a beginner (or intermediate) CSS user to becoming one of the best CSS devs you know! 


👉🏻 COURSE CONTENT?
1. A detailed look at CSS Fundamentals
2. Practical SVG for today
3. A Sane Guide to Responsive Design
4. Creating sleek Interfaces with CSS Animations and Transitions
5. Writing Maintainable CSS and tips for CSS at Scale
6. Learn the CSS Grid by Building ... wait for it! 😉
7. Get a Private slack Invite where you can ask me anything
8. Gain a Solid Understanding of CSS Fundamentals 
9. Build Practical Projects
10. Flexbox, Variables, Gradients, Backgrounds, Responsive Images, Handy pro tools, and many more! 

👉🏻 WHAT ARE THE REQUIREMENTS?
The course assumes no previous knowledge of CSS

👉🏻 WHAT'S THE TARGET AUDIENCE?
1. Backend Engineers looking to level up their frontend design skills 
2. Budding developers looking to create beautiful applications 
3. Generally, engineers who want to stand out by truly understanding the internals of CSS

Ready to upgrade?

The Complete Advanced Guide to CSS

# 1. Custom properties are ordinary properties, so they can be declared on any element.

Declare them on a paragraph element, section, aside, root, or even pseudo-elements. They’ll work as expected. 

 

![](/api/collection/5191711974227968/5641332169113600/page/5112623305588736/image/5737014913662976)

# 2. CSS variables are resolved with the normal inheritance and cascade rules

Consider the block of code below: 

```
div {
 --color: red;
}
 
div.test {
 color: var(--color)
}
 
div.ew {
 color: var(--color)
}

```

As with normal variables, the `--color` value will be inherited by the divs

 


![](/api/collection/5191711974227968/5641332169113600/page/5112623305588736/image/5653795627335680)

 

# 3. CSS variables can be made conditional with `@media` and other conditional rules

As with other properties, you can change the value of a css variable within a `@media` block or other conditional rules.

For example, the following code changes the value of the variable, gutter on larger devices.


```

:root {
 --gutter: 10px 
}

@media screen and (min-width: 768px) {
 --gutter: 30px
 }

```
 

![](/api/collection/5191711974227968/5641332169113600/page/5112623305588736/image/5686969954729984)
 

# 4. CSS variables can be used in HTML’s style attribute. 
You can choose to set the value of your variables inline, and they’ll still work as expected. 

```


<html style="--color: red">


body { 
	color: var(--color)
}

```

![](/api/collection/5191711974227968/5641332169113600/page/5112623305588736/image/5753627847163904)

 

CSS variables are case sensitive. Be careful with this one. I save myself the stress and write variables in the lower case. Your mileage may vary.

```
/*these are two different variables*/
:root {
 --color: blue;
 --COLOR: red;
}

```

# 1. Custom properties are ordinary properties, so they can be declared on any element.

Declare them on a paragraph element, section, aside, root, or even pseudo-elements. They’ll work as expected. 

 

![](/api/collection/5191711974227968/5641332169113600/page/5112623305588736/image/5737014913662976)

# 2. CSS variables are resolved with the normal inheritance and cascade rules

Consider the block of code below: 

```
div {
 --color: red;
}
 
div.test {
 color: var(--color)
}
 
div.ew {
 color: var(--color)
}

```

As with normal variables, the `--color` value will be inherited by the divs

 


![](/api/collection/5191711974227968/5641332169113600/page/5112623305588736/image/5653795627335680)

 

# 3. CSS variables can be made conditional with `@media` and other conditional rules

As with other properties, you can change the value of a css variable within a `@media` block or other conditional rules.

For example, the following code changes the value of the variable, gutter on larger devices.


```

:root {
 --gutter: 10px 
}

@media screen and (min-width: 768px) {
 --gutter: 30px
 }

```
 

![](/api/collection/5191711974227968/5641332169113600/page/5112623305588736/image/5686969954729984)
 

# 4. CSS variables can be used in HTML’s style attribute. 
You can choose to set the value of your variables inline, and they’ll still work as expected. 

```


<html>


body { 
	color: var(--color)
}

```

![](/api/collection/5191711974227968/5641332169113600/page/5112623305588736/image/5753627847163904)

 

CSS variables are case sensitive. Be careful with this one. I save myself the stress and write variables in the lower case. Your mileage may vary.

```
/*these are two different variables*/
:root {
 --color: blue;
 --COLOR: red;
}

```

Here are some behaviors that are worth mentioning. 

Properties Worthy of Mention

Here are some behaviors that are worth mentioning.

Introduction

Getting started with CSS

Oh My Selectors!

CSS Fundamentals Everyone Should Know

Colors, colors, colors!

We all Need Units

Typography in CSS

The Box Model

Challenge: Hands-on Practice with Texts, Margin, Padding and Borders

Getting creative with Backgrounds

Project: Build a Movie Order Page

Making Sense of CSS Gradients

Hands-on Practice with Gradients

Project: Build a Sign Up Page for a Startup

{New} Teach Me Positioning Like I'm Five

{New} A Detailed Look at CSS Variables ( a.k.a Custom Properties )

{New} CSS Variables Real World Applications

{New} Long Live the CSS Grid

Final Words

Properties Worthy of Mention

1. Custom properties are ordinary properties, so they can be declared on any element.