How to add radial and linear gradients with CSS3

How to add radial and linear gradient as circle with CSS.
Use bellow code it can help you like given image.
Some other beautiful Gradient functions are available. Like

1. Radial-Gradient()
2. Linear-Gradient()
3. Repeating-Radial-Gradient()
4. Repeating-Linear-Gradient()

---

Radial Gradient

 body{  
 background : radial-gradient(circle, #3E3E3E, #000) repeat scroll 0 0 transparent;  
 }  

Updated

Linear Gradient

 body{  
 background-image: linear-gradient(to bottom, #026CC4, #095A9B);  
 }  

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