Understanding the Box Model   
Every HTML element is like a box, comprising content, padding, border, and margin. Mastering this model is key to controlling spacing and layout.  
1️⃣ Content: This is where text and images appear. 
2️⃣ Padding: Clears an area around the content, transparently. 
3️⃣ Border: Surrounds the padding and content. 
4️⃣ Margin: Clears an area outside the border, transparently. 

Responsive Design Magic  
With the Box Model and Layout techniques, create responsive designs that adapt beautifully to different screen sizes and devices. Your website will look great everywhere!

Mobile screen output    
When the screen width is 768px or less, footer text/links aligned to center.

Desktop screen output  
When the screen width is 992px or more, footer text/links aligned to left.