How to create a curve between two gradient divs in CSS?

问题

I have two divs with distinct gradient background and I need to create a S-Shape curve between them.

Here's the example fiddle for gradient divs: https://jsfiddle.net/JerryGoyal/rjyfc46c/2/

<div id="section1">

</div>
<div id="section2">

</div>
#section1{
  height:200px;
  background: linear-gradient(to bottom right, #ad3, #add);
}
#section2{
  height:200px;
  background: linear-gradient(to bottom right, #de350b, #0065ff);
}

There are couple of things which crossed my mind but:

- svg: don't know how to handle other gradient div.
- border-radius: failed to get truly S-like curve plus it gets ugly when I resize the screen.
- clip-path: not supported by some browsers https://caniuse.com/css-clip-path
- png image: nope! needs to be dynamic content.

any help would be appreciated!

---

P.S: a must read for future readers: https://css-tricks.com/creating-non-rectangular-headers/

回答1:

Here is a solution using linearGradient with SVG.

.container {
  width: 500px;
  height: 200px;
  background:linear-gradient(to bottom right, #de350b, #0065ff);
}
svg {
  width:100%;
}

<div class="container">
  <svg mlns='http://www.w3.org/2000/svg' viewBox="0 0 64 64">
    <defs>
    <linearGradient id="grad" x1="0%" y1="0%" x2="100%" y2="100%">
      <stop offset="0%" stop-color="#ad3" />
      <stop offset="100%" stop-color="#add" />
    </linearGradient>
  </defs>
    <path d='M0 10 C30 28 38 0 64 10 L64 0 L0 0 Z'  fill="url(#grad)"/>
  </svg>
</div>

Here is also a useful online tool to easily edit the shape (simply append the path to the url to edit ithttp://jxnblk.com/paths/?d=M0 10 C30 28 38 0 64 10 L64 0 L0 0 Z )

---

Another idea with the same SVG used as a background so you can easily handle content above it:

.container {
  width: 500px;
  height: 200px;
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" width="500" ><defs><linearGradient id="grad" x1="0%" y1="0%" x2="100%" y2="100%"><stop offset="0%" stop-color="%23ad3" /><stop offset="100%" stop-color="%23add" /></linearGradient></defs><path d="M0 10 C30 28 38 0 64 10 L64 0 L0 0 Z"  fill="url(%23grad)"/></svg>'), 
  linear-gradient(to bottom right, #de350b, #0065ff);
  
  display:flex;
  justify-content:space-around;
  align-items:center;
  flex-direction:column;
  color:#fff;
}

<div class="container">
<p>TOP</p>
<p>BOTTOM</p>
</div>

来源：https://stackoverflow.com/questions/49669689/how-to-create-a-curve-between-two-gradient-divs-in-css