Hexagon shape with a border/outline

Question

I know it\'s possible to create a hexagon shape using the following code:

.hex:before {
    content: \" \";
    width: 0; height: 0;
    border-bottom: 30px          


        

Answer 1

Here is another method to create hexagons with border (or outline) using the clip-path feature. In this method, we use a container element and a pseudo-element which has smaller dimensions (both height and width) than the container. When the same clip-path is applied to both the elements, the background-color of the container element is seen behind the pseudo-element only at the edges and makes it look like a border/outline to the shape.

Advantages:

• Hexagons can also have gradients or images (basically non-solid color) as background.
• Shape is responsive and can automatically adapt to any change in the container dimensions.

.hexagon {
  position: relative;
  height: 150px;
  width: 150px;
  background: black;
}
.hexagon:before, .double:after {
  position: absolute;
  content: '';
}
.hexagon:before {
  top: 4px;  /* border width */
  left: 4px;  /* border width */
  height: calc(100% - 8px);  /* 100% - (2 * border width) */
  width: calc(100% - 8px);  /* 100% - (2 * border width) */
  background: #6c6;
}
.hexagon, .hexagon:before, .double:after {
  -webkit-clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}
.image:before {
  background: url(http://lorempixel.com/150/150/nature/1);
}
.double:after {
  top: 8px;
  left: 8px;
  height: calc(100% - 16px);
  width: calc(100% - 16px);
  background: black;
}

/* Just for demo */

.hexagon {
  display: inline-block;
  margin: 20px;
}

The major disadvantage is the poor browser support at present. CSS clip-path do not work in IE and FF currently. The problem with FF can be fixed by using a SVG (inline or external) for the clip-path (like in the below snippet):

.hexagon {
  position: relative;
  height: 150px;
  width: 150px;
  background: black;
}
.hexagon:before, .double:after {
  position: absolute;
  content: '';
}
.hexagon, .hexagon:before, .double:after {
  -webkit-clip-path: url(#hexagon-clip);
  clip-path: url(#hexagon-clip);
}
.hexagon:before {
  top: 4px;  /* border width */
  left: 4px;  /* border width */
  height: calc(100% - 8px);  /* 100% - (2 * border width) */
  width: calc(100% - 8px);  /* 100% - (2 * border width) */
  background: #6c6;
}
.image:before {
  background: url(http://lorempixel.com/200/200);
}
.double:after {
  top: 8px;
  left: 8px;
  height: calc(100% - 16px);
  width: calc(100% - 16px);
  background: black;
}

/* Just for demo */

.hexagon {
  display: inline-block;
  margin: 20px;
}