CSS border-radius: How to Effectively Design Rounded Corners and Circles

The evolution of web design is remarkable. In the past, achieving simple designs often required complex methods and workarounds. Today, thanks to the power of CSS, designs once thought impossible can now be implemented easily and efficiently. In this article, we will delve into how to use the CSS border-radius property to create rounded shapes and perfect circles. This is an invaluable technique in web design, widely utilized by beginners and advanced users alike.

Rounded Corners and Circles with CSS

The CSS border-radius property is used to round the corners of an element. This seemingly simple property has revolutionized web design, enabling the easy creation of design elements like rounded buttons, avatars, and info boxes that give off a soft, friendly impression.

Creating Rounded Corners

Rounded corners soften the edges of elements, making them appear more approachable. In CSS, you can create rounded corners by setting the border-radius property as follows:

.kadomaru {
    border-radius: 10px; /* Size of the corner rounding */
}

Creating Perfect Circles

To create a perfect circle, set the border-radius property to half the width and height of the element. This simple technique is often used for icons or profile pictures to achieve circular designs.

.maru {
    border-radius: 50%; /* Make the element circular */
}

Practical Examples

In web design, practice often outweighs theory. Here, we’ll demonstrate how to create rounded corners and circles using HTML and CSS.

Preparing the HTML

First, add elements to your HTML where you want to apply rounded corners (class=”kadomaru1″) or circles (class=”maru1″).

<h1>Let's create rounded corners and circles with CSS</h1>
      <br>
      <br>
      <div class="kadomaru1">Rounded</div>
      <br>
      <br>
      <div class="maru1">Circle</div>

Styling with CSS

Next, apply styles to the above HTML elements. Here, we define styles for the classes .kadomaru1 (rounded corners) and .maru1 (circle). Adjust the border-radius size to switch between rounded corners and circles. Modify sizes, colors, etc., as needed.

<style>
body {
  font-family: Verdana, "Hiragino Kaku Gothic Pro", "ヒラギノ角ゴ Pro W6", Osaka, "ＭＳ Ｐゴシック", Arial, sans-serif;
  padding: 0;
  margin: 0;
  overflow-x: hidden;
  line-height: 1.8em;
  font-size: 16px;
}
h1 {
  font-size: 18px;
  line-height: 1.6em;
  text-align: center;
  font-weight: normal;
  padding: 10px 0;
}
.maru1 {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    border: solid 1px #777777;
    border-radius: 40px;
    background-color: #777777;
    text-align: center;
    line-height: 80px;
    color: #ffffff;
}
.kadomaru1 {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    border: solid 1px #333333;
    border-radius: 10px;
    background-color: #333333;
    text-align: center;
    line-height: 80px;
    color: #ffffff;
}
</style>

With just CSS, you can easily create rounded corners and circles. This technique allows for greater design diversity without additional markup or images.

Demo Page for CSS Rounded Corners and Circles

You can view the implementation on the demo page below:

Demo of CSS Rounded Corners and Circles

Conclusion

By leveraging the CSS border-radius property, you can easily achieve designs like rounded corners and circles. These small changes can significantly impact the impression your website makes. If you want to add softness or a friendly vibe to your design, this technique is worth exploring. We hope this article serves as a helpful resource in learning CSS.

The moments when we realize the progress of technology are always inspiring. From the era of IE6 to the present, the possibilities of web design have expanded immensely. The border-radius property alone provides a glimpse into the history of this evolution. The world of design is always moving forward, and we should be grateful to be a part of it.

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