Explore several ways to create irregular borders using CSS

CSS Irregular Border

With the continuous progress and innovation of web design, sometimes ordinary square or circular borders can no longer meet the needs of web design. The development of CSS has made irregular borders possible, and they are increasingly used in modern web design. In this article, we’ll explore several ways to create irregular borders using CSS.

1. Use clip-path

Clip-path is a CSS property used to clip fixed-size images or elements. It allows developers to specify a clipping path so that only the portion of the object within the path is displayed. Therefore, we can create irregular shapes by applying clipping paths on elements.

Sample code for using clip-path to create an irregular border is as follows:

.clip-path-example {
  background-color: #333333;
  clip-path: polygon(0 0, 100% 0, 100% 70%, 50% 100%, 0 70%);
}

The above style will create a clipping path, which changes the shape of the element into an irregular polygon, thereby creating An unusual border shape (shown in Figure 1).

Figure 1. Irregular border created using clip-path

2. Use pseudo-elements(pseudo-elements)

Another A common way to create irregular borders is to use pseudo-elements to simulate borders. We can take advantage of the properties of pseudo-elements, place them outside the bounds of the element, and use CSS styles to create the desired border shape.

The sample code for using pseudo-elements to create irregular borders is as follows:

.pseudo-element-example {
  position: relative;
  width: 200px;
  height: 200px;
  background-color: #333333;
  overflow: hidden;
}
.pseudo-element-example::before {
  content: '';
  position: absolute;
  top: -15px;
  left: -15px;
  width: 230px;
  height: 230px;
  background-color: #ffffff;
  border-radius: 50%;
}

The above style will create a pseudo-element suspended outside the element, which is set to round and white, using The overflow attribute hides the cropped portion, creating an unusual border shape (as shown in Figure 2).

Figure 2. Irregular border created using pseudo elements

3. Use SVG path (SVG path)

SVG (Scalable Vector Graphics) is a vector graphics format that allows us to create graphics of almost any shape. We can use SVG’s path element to create an irregular border shape and apply it to an element.

The sample code for using SVG path to create an irregular border is as follows:

.svg-path-example {
  background-color: #333333;
  mask-image: url('data:image/svg+xml;utf8,<svg><path></path></svg>');
}

The above style will create an SVG path element, which defines an irregular shape, using mask-image technology Apply this to the element, creating an unusual border shape (as shown in Figure 3).

Figure 3. Irregular border created using SVG paths

Conclusion

In this article, we discussed three ways to use CSS Methods to create irregular borders: clip-path, pseudo-elements and SVG path. Each of these methods has its pros and cons, and more creative and complex designs can be achieved using different techniques and tools. Whichever method you use, remember to consider browser compatibility and performance issues and make sure your pages display properly on all devices.

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