Is it possible to achieve a capsule shape using border-radius without specifying a fixed width or height?

Can a capsule shape be created using border-radius without specifying a width or height?

I am looking to have the left and right sides of the capsule fully rounded while keeping the horizontal length straight. Setting the radius to 50% does not achieve the desired effect.

Answer №1

One effective technique is employing a significantly large border radius, which has been observed to be successful across various browsers such as IE9, Firefox, and Chrome. You can see this approach in action in the modified version of David's fiddle available at http://jsfiddle.net/cthQW/1/

border-radius: 500px;

Answer №2

Achieving an elliptical border radius is indeed possible, as demonstrated in Chromium 28/Ubuntu 12.10:

div {
    /* This is the key: */
    border-radius: 20%/50%;

    /* Additional styling for visualization purposes: */
    width: 50%;
    height: 5em;
    margin: 2em auto;
    background-color: #000;
}

View the JS Fiddle demo for a visual representation.

The essence lies in the 20%/50% property-value; the first number signifies the 'horizontal length' of the radius, while the second denotes the 'vertical length'. Utilizing differing measurements creates an elliptical curve, in contrast to a single measurement that produces a circular radius. Adapting this technique may entail adjustments according to individual needs.

For more information, refer to:

Answer №3

When using percentages, the element width is used to calculate the radius. To achieve a capsule-shaped element, it is necessary to provide units like rem or px for the border-radius property (the reason behind this is not clear, but it does work). This explains why specifying 500px works. You can apply the same value to the line-height and border-radius properties if desired.

.capsule {
    line-height: 48px;
    border-radius: 48px;
}

An example can be found in CodePen. Try adjusting the $label-height variable to observe how the shape remains consistent while the button's height changes.

In this scenario, specifying the element's width or height is unnecessary. Focus on adjusting the content's height and padding instead.

The padding property effectively creates a separation between the content and the component border. Just setting the left padding can yield interesting results.

https://i.sstatic.net/TqPMH.png

By setting the line-height property of the container, not only does the container's height get established automatically, but it also centers the content within the container.

To match the component's width with the content width, altering the component's display property to inline-block, and employing FlexBox for column alignment, can be effective. Adding left and right margins set to auto prevents the element from expanding to the parent width.

https://i.sstatic.net/viYfX.png

For spacing between components, utilizing the margin-top property between consecutive components is advisable.

.capsule + .capsule {
    margin-top: 15px;
}

Hopefully, this explanation proves helpful :)

Answer №4

To create a unique look using HTML Span, all you need to do is adjust the background-color and border-radius properties.

span {
  background-color: #30bb36;
  border-radius: 10px;  
  padding-left: 10px;
  padding-right: 10px;
}
<!DOCTYPE html>
<html>
  <body>
    <p>Customize the <span>Background Color</span> for specific text.</p>
    <span>One</span>
    <span>Two</span>
    <span>Three</span>
    <span>Four</span>
  </body>
</html>

Answer №5

To achieve a capsule shape, simply adjust the border radius to match the height of the element.

For example, if the height is set to 5rem, then set the border radius to 5rem as well.

If you are using padding or borders, it is recommended to set box-sizing: border-box; to ensure that the padding and border are included in the total height of the element.

Answer №6

In my experience, this CSS property has always delivered great results:

border-radius: 50vh;

I have also noticed that browser support for this feature has significantly improved.

To clarify, the use of vh in this context refers to the "Viewport Unit," which calculates the height of the viewport in pixels. Therefore, setting the border radius to 50vh equates to 50% * (Viewport Height)px.

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