Border Radius

Submitted by Yorkiebar on Friday, January 24, 2014 - 08:41.
Introduction: This is the sixth part in my CSS Styling tutorials, in which I will be covering border radius. What is Border Radius: Border radius is a property within the border settings which allows you to change how curved the borders are. The radius sets the curve for the full border. Structure: border-radius: {Amount}{Measurement}; Example: 
  1. border-radius: 5px;
Comparison: The bigger the border radius, the more curved the border will be. 
  1. border-radius: 15px;
The above code will be a smoother curve than... 
  1. border-radius: 5px;
Individual: You can also the individual corners border radius... 
  1. border-top-left-radius: 2em;
  2. border-top-right-radius: 1em;
  3. border-bottom-right-radius: 4em;
  4. border-bottom-left-radius: 1em;
Linking CSS To a HTML Element: To link your CSS to an HTML element (text, div, etc.) you will need to decide whether you want to use a class or id, you will also need a unique name. Once you have those, go to your element in HTML and add... 
  1. class='myClass'
... to the attributes of that element if you chose a class, or... 
  1. id='myID'
if you chose an id. Make sure you replace 'myClass' and/or 'myID' with your unique name. Then, in the CSS you will want to encase your properties with... 
  1. .myClass {
  2. 	//Properties go here
  3. }
if you chose a class, or... 
  1. #myID {
  2. 	//Properties go here
  3. }
(You can remove the line beginning with // if you wish). Here's an example... 
  1. <html>
  2. 	<head>
  3. 		<style>
  4. 			.circle {
  5. 				background-color: #000;
  6. 				color: #fff;
  7. 				width: 300px;
  8. 				height: 100px;
  9. 				border: 2px solid #000;
  10. 				border-radius: 100%;
  11. 			}
  12.  
  13. 			.rounded {
  14. 				background-color: #000;
  15. 				color: #fff;
  16. 				width: 300px;
  17. 				height: 100px;
  18. 				border: 2px solid #000;
  19. 				border-radius: 5px;
  20. 			}
  21.  
  22. 			.block {
  23. 				background-color: #000;
  24. 				color: #fff;
  25. 				width: 300px;
  26. 				height: 100px;
  27. 				border: 2px solid #000;
  28. 				border-radius: 0px;
  29. 			}
  30. 		</style>
  31. 	</head>
  32. 	<body>
  33. 		<div class='circle'>Circle</div>
  34. 		<div class='rounded'>Rounded</div>
  35. 		<div class='block'>Block</div>
  36. 	</body>
  37. </html>

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