Wavy border css for a circle

Question

Is there a way we could get a wavy background for a circle.

I could get the circle shape with ease, but not sure how we could get the border like in the given pic.

<div class="circle-wave">

</div>

.circle-wave {
 cursor: pointer;
 height: 50px;
 width: 50px;
 border-radius: 50%;
}

Answer 1

Based on a previous answer where I created something similar zig-zag-border-for-a-circle you can do some adjustement to have this layout. Basically, I added stroke to the SVG element then I added a radial gradient to cover the non needed part. By the way it's a solution without transparency.

.zigzag {
   width:256px;
   height:256px;
   background:
    radial-gradient(#fff 60%,transparent 61%),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' fill='white' width='256'> <path d='M48 240 L48 16 L32 0 L16 16 L16 240 L32 256 Z' stroke='red' stroke-width='3' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' fill='white' width='256' style='transform:rotate(16.36deg);'> <path  d='M48 240 L48 16 L32 0 L16 16 L16 240 L32 256 Z' stroke='red' stroke-width='3' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' fill='white' width='256' style='transform:rotate(32.73deg);'> <path  d='M48 240 L48 16 L32 0 L16 16 L16 240 L32 256 Z' stroke='red' stroke-width='3' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' fill='white' width='256' style='transform:rotate(49.09deg);'> <path  d='M48 240 L48 16 L32 0 L16 16 L16 240 L32 256 Z' stroke='red' stroke-width='3' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' fill='white' width='256' style='transform:rotate(65.45deg);'> <path  d='M48 240 L48 16 L32 0 L16 16 L16 240 L32 256 Z' stroke='red' stroke-width='3' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' fill='white' width='256' style='transform:rotate(81.81deg);'> <path  d='M48 240 L48 16 L32 0 L16 16 L16 240 L32 256 Z' stroke='red' stroke-width='3' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' fill='white' width='256' style='transform:rotate(98.18deg);'> <path  d='M48 240 L48 16 L32 0 L16 16 L16 240 L32 256 Z' stroke='red' stroke-width='3' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' fill='white' width='256' style='transform:rotate(114.54deg);'> <path  d='M48 240 L48 16 L32 0 L16 16 L16 240 L32 256 Z' stroke='red' stroke-width='3' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' fill='white' width='256' style='transform:rotate(130.90deg);'> <path  d='M48 240 L48 16 L32 0 L16 16 L16 240 L32 256 Z' stroke='red' stroke-width='3' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' fill='white' width='256' style='transform:rotate(147.27deg);'> <path  d='M48 240 L48 16 L32 0 L16 16 L16 240 L32 256 Z' stroke='red' stroke-width='3' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' fill='white' width='256' style='transform:rotate(164.2deg);'> <path  d='M48 240 L48 16 L32 0 L16 16 L16 240 L32 256 Z' stroke='red' stroke-width='3' /></svg>");
    background-size:100% 100%;

    display:inline-block;
}

<div class="zigzag">
</div>
<div class="zigzag" style="width:100px;height:100px;">
</div>
<div class="zigzag" style="width:50px;height:50px;">
</div>

If you want transparency you can modify the SVG element to only keep two triangle at the top and the bottom like this:

svg {
  stroke: red;
  stroke-width: 3px;
  fill: transparent;
  border: 1px solid;
}
svg polygon:first-child {
  stroke-dasharray: 45, 35;
}
svg polygon:last-child {
  stroke-dasharray: 45, 35;
  stroke-dashoffset: -32;
}

<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256'> 
<polygon points='48,16 32,0 16,16' />
<polygon points='48,240 16,240 32,256' />
</svg>

Then simply integrate it to the background:

.zigzag {
   width:256px;
   height:256px;
   background:
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='transparent'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='transparent' style='transform:rotate(16.36deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='transparent' style='transform:rotate(32.73deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='transparent' style='transform:rotate(49.09deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='transparent' style='transform:rotate(65.45deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='transparent' style='transform:rotate(81.81deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='transparent' style='transform:rotate(98.18deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='transparent' style='transform:rotate(114.54deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='transparent' style='transform:rotate(130.90deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='transparent' style='transform:rotate(147.27deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='transparent' style='transform:rotate(164.2deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>");
    background-size:100% 100%;
    
    display:inline-block;
}
body {
 background:pink;
}

<div class="zigzag">
</div>
<div class="zigzag" style="width:100px;height:100px;">
</div>
<div class="zigzag" style="width:50px;height:50px;">
</div>

Here is with a coloration inside:

.zigzag {
   width:256px;
   height:256px;
   background:
    radial-gradient(orange 60%,transparent 61%),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='orange'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='orange' style='transform:rotate(16.36deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='orange' style='transform:rotate(32.73deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='orange' style='transform:rotate(49.09deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='orange' style='transform:rotate(65.45deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='orange' style='transform:rotate(81.81deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='orange' style='transform:rotate(98.18deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='orange' style='transform:rotate(114.54deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='orange' style='transform:rotate(130.90deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='orange' style='transform:rotate(147.27deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>"),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='-97 -3 256 262' width='256' stroke-dasharray='45, 35' stroke='red' stroke-width='3' fill='orange' style='transform:rotate(164.2deg);'><polygon points='48,16 32,0 16,16' /><polygon points='48,240 16,240 32,256' stroke-dashoffset='-32' /></svg>");
    background-size:100% 100%;
    
    display:inline-block;
}
body {
 background:pink;
}

<div class="zigzag">
</div>
<div class="zigzag" style="width:100px;height:100px;">
</div>
<div class="zigzag" style="width:50px;height:50px;">
</div>