CSS Tutorial

CSS Rounded Corners

Last modified on: October 29, 2024

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<h3>CSS Rounded Corners: Enhancing Design with <code>border-radius</code></h3>
<p>Rounded corners can significantly enhance the aesthetic appeal of web elements, making them appear softer and more visually appealing. In CSS, the <code>border-radius</code> property allows you to create rounded corners for elements like boxes, buttons, and images.</p>
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<h3>What is <code>border-radius</code>?</h3>
<p>The <code>border-radius</code> property in CSS is used to define the radius of an element's corners. You can specify different values for each corner, allowing for great flexibility in design.</p>
<h4>Syntax</h4>
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<pre class="language-css"><code>selector {
    border-radius: radius; /* uniform radius for all corners */
    border-radius: top-left top-right bottom-right bottom-left; /* individual corners */
}
</code></pre>
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<h4>Values</h4>
<ul>
<li><strong>Length</strong>: You can specify the radius in pixels (<code>px</code>), percentages (<code>%</code>), or other length units.</li>
<li><strong>Percentage</strong>: Using percentages will make the radius relative to the element&rsquo;s dimensions.</li>
</ul>
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<h3>Examples of <code>border-radius</code></h3>
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<p><strong>Uniform Rounded Corners</strong></p>
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<pre class="language-css"><code>.box {
    width: 200px;
    height: 100px;
    background-color: #007bff;
    border-radius: 15px; /* All corners rounded by 15 pixels */
}
</code></pre>
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<p><strong>Individual Corner Radii</strong></p>
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<pre class="language-css"><code>.box {
    width: 200px;
    height: 100px;
    background-color: #ff5722;
    border-radius: 10px 20px 30px 40px; /* top-left, top-right, bottom-right, bottom-left */
}
</code></pre>
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</li>
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<p><strong>Using Percentage for Circular Shapes</strong></p>
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<pre class="language-css"><code>.circle {
    width: 100px;
    height: 100px;
    background-color: #4caf50;
    border-radius: 50%; /* Creates a perfect circle */
}
</code></pre>
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<h3>Using <code>border-radius</code> in Practice</h3>
<p>Here&rsquo;s a complete example demonstrating the use of the <code>border-radius</code> property to create visually appealing elements:</p>
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<pre class="language-markup"><code>&lt;!DOCTYPE html&gt;
&lt;html lang="en"&gt;
&lt;head&gt;
    &lt;meta charset="UTF-8"&gt;
    &lt;meta name="viewport" content="width=device-width, initial-scale=1.0"&gt;
    &lt;title&gt;CSS Rounded Corners Example&lt;/title&gt;
    &lt;style&gt;
        body {
            margin: 0;
            font-family: Arial, sans-serif;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            background-color: #f4f4f4;
        }

.box {
            width: 200px;
            height: 100px;
            background-color: #007bff;
            border-radius: 20px; /* Rounded corners */
            display: flex;
            justify-content: center;
            align-items: center;
            color: white;
            font-size: 18px;
        }

.circle {
            width: 100px;
            height: 100px;
            background-color: #ff5722;
            border-radius: 50%; /* Perfectly rounded to form a circle */
            display: flex;
            justify-content: center;
            align-items: center;
            color: white;
            font-size: 18px;
            margin-top: 20px;
        }
    &lt;/style&gt;
&lt;/head&gt;
&lt;body&gt;

&lt;div class="box"&gt;Rounded Box&lt;/div&gt;
    &lt;div class="circle"&gt;Circle&lt;/div&gt;

&lt;/body&gt;
&lt;/html&gt;
</code></pre>
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<h3>Explanation of the Example</h3>
<ul>
<li><strong>Rounded Box</strong>: The <code>.box</code> element has rounded corners with a radius of 20 pixels, creating a softer edge.</li>
<li><strong>Circle</strong>: The <code>.circle</code> element uses a <code>border-radius</code> of 50% to achieve a perfect circular shape.</li>
</ul>
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<h3>Advanced Usage: Combining with Other Properties</h3>
<p>You can combine <code>border-radius</code> with other properties like <code>box-shadow</code> to enhance the appearance further.</p>
<h4>Example:</h4>
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<pre class="language-css"><code>.box {
    width: 200px;
    height: 100px;
    background-color: #007bff;
    border-radius: 20px; /* Rounded corners */
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2); /* Adds a shadow effect */
}
</code></pre>
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<p>This combination adds depth to the element, making it stand out on the page.</p>
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<h3>&nbsp;</h3>
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