You can give any element “rounded corners” with the CSS border-radius property.
The CSS border-radius defines radius of an element’s corners.
Tip: The border-radius property is actually a shorthand property for the border-top-left-radius, border-top-right-radius, border-bottom-right-radius and border-bottom-left-radius properties.
Example:
<!DOCTYPE html>
<html>
<head>
<style>
#rcorners1 {
border-radius: 25px;
background: lightblue;
padding: 20px;
width: 200px;
height: 150px;
}
#rcorners2 {
border-radius: 25px;
border: 2px solid lightblue;
padding: 20px;
width: 200px;
height: 150px;
}
#rcorners3 {
border-radius: 25px;
background: url(https://lenadesign.org/wp-content/uploads/2020/01/1a.jpg?w=640);
background-position: left top;
background-repeat: repeat;
padding: 20px;
width: 200px;
height: 150px;
}
</style>
</head>
<body>
<h1>The border-radius Property</h1>
<p>Rounded corners for an element with a specified background color:</p>
<p id="rcorners1">Rounded corners!</p>
<p>Rounded corners for an element with a border:</p>
<p id="rcorners2">Rounded corners!</p>
<p>Rounded corners for an element with a background image:</p>
<p id="rcorners3">Rounded corners!</p>
</body>Output:
CSS border-radius can have from one to four values (specify each corner). Here are the rules:
<!DOCTYPE html>
<html>
<head>
<style>
#rcorners1 {
border-radius: 15px 50px 30px 5px;
background: lightpink;
padding: 20px;
width: 200px;
height: 150px;
}
#rcorners2 {
border-radius: 15px 50px 30px;
background: lightblue;
padding: 20px;
width: 200px;
height: 150px;
}
#rcorners3 {
border-radius: 15px 50px;
background: lightgreen;
padding: 20px;
width: 200px;
height: 150px;
}
#rcorners4 {
border-radius: 15px;
background: brown;
padding: 20px;
width: 200px;
height: 150px;
}
</style>
</head>
<body>
<h1>The border-radius Property</h1>
<p>Four values - border-radius: 15px 50px 30px 5px; (first value applies to top-left corner, second value applies to top-right corner, third value applies to bottom-right corner, and fourth value applies to bottom-left corner): </p>
<p id="rcorners1"></p>
<p>Three values - border-radius: 15px 50px 30px; (first value applies to top-left corner, second value applies to top-right and bottom-left corners, and third value applies to bottom-right corner):</p>
<p id="rcorners2"></p>
<p>Two values - border-radius: 15px 50px; (first value applies to top-left and bottom-right corners, and the second value applies to top-right and bottom-left corners):</p>
<p id="rcorners3"></p>
<p>One value - border-radius: 15px; (the value applies to all four corners, which are rounded equally:</p>
<p id="rcorners4"></p>
</body>
</html>
Output:
You can also create elliptical corners:
<!DOCTYPE html>
<html>
<head>
<style>
#rcorners1 {
border-radius: 50px / 15px;
background: lightpink;
padding: 20px;
width: 200px;
height: 150px;
}
#rcorners2 {
border-radius: 15px / 50px;
background: lightblue;
padding: 20px;
width: 200px;
height: 150px;
}
#rcorners3 {
border-radius: 50%;
background: lightgreen;
padding: 20px;
width: 200px;
height: 150px;
}
</style>
</head>
<body>
<h1>The border-radius Property</h1>
<p>Elliptical border - border-radius: 50px / 15px:</p>
<p id="rcorners1"></p>
<p>Elliptical border - border-radius: 15px / 50px:</p>
<p id="rcorners2"></p>
<p>Ellipse border - border-radius: 50%:</p>
<p id="rcorners3"></p>
</body>
</html>Output:
To create a circle, use the border-radius property and set the value to 50%. Then combine the height and width properties with a matching value:
<!DOCTYPE html>
<html>
<head>
<style>
.circle {
background-color:lightblue;
border:1px solid red;
height:100px;
border-radius:50%;
-moz-border-radius:50%;
-webkit-border-radius:50%;
width:100px;
}
</style>
</head>
<body>
<h1>The border-radius Property</h1>
<div class="circle"></div>
</body>
</html>
Output:
Enjoy coding!