CSS - 渐变边框在 safari 中不起作用

Question

I am trying to create a custom button with a gradient border. At this point I got the button to work in both Chrome and Firefox.

I have followed an online guide on how to create custom borders with a gradient which are also rounded. The link to the guide can be found here: documentation .

But for some reason the same styling does not work in Safari. I do not know why this is the case.

Here is the CSS code I use in order to create the button. I have also included a snippet with the same style at the bottom. Note that the snippet has a few extra classes and CSS properties just to get it to show properly.

.rainbow-gradient-border {
  position: relative;

  border-radius: 0.25rem;
  box-shadow: 0 2px 10px 0 rgba(142, 57, 255, 0.29);
}
.rainbow-gradient-border::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 0.25rem;
  padding: 0.1rem;
  background: linear-gradient(
    90deg,
    #4d3d8f 0%,
    #df67ed 23%,
    #e24c26 65%,
    #f18823 84%,
    #3aa6c2 100%
  );
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
}

 body, .container{ width: 100%; height: 100%; background-color: black; }.container{ background-color: black; }.rainbow-gradient-border { position: relative; color: white; width: 10rem; display: flex; justify-content: center; align-items: center; border-radius: 0.25rem; box-shadow: 0 2px 10px 0 rgba(142, 57, 255, 0.29); }.rainbow-gradient-border::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; border-radius: 0.25rem; padding: 0.1rem; background: linear-gradient( 90deg, #4d3d8f 0%, #df67ed 23%, #e24c26 65%, #f18823 84%, #3aa6c2 100% ); -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); -webkit-mask-composite: destination-out; mask-composite: exclude; }

 <div class="container"> <div class="rainbow-gradient-border"> <p>Log In</p> </div> </div>

Answer 1

You can achieve this in a more simple way, without using masks. I used this tool to add the prefixes.

 body, .container{ width: 100%; height: 100%; background-color: black; color: white; }.rainbow-gradient-border { position: relative; }.outie{ display: inline-block; background: -webkit-gradient( linear, left top, right top, from(#4d3d8f), color-stop(23%, #df67ed), color-stop(65%, #e24c26), color-stop(84%, #f18823), to(#3aa6c2) ); background: -o-linear-gradient( left, #4d3d8f 0%, #df67ed 23%, #e24c26 65%, #f18823 84%, #3aa6c2 100% ); background: linear-gradient( 90deg, #4d3d8f 0%, #df67ed 23%, #e24c26 65%, #f18823 84%, #3aa6c2 100% ); border-radius: 4px; padding: 2px; width: 10rem; border-radius: 0.25rem; -webkit-box-shadow: 0 2px 10px 0 rgba(142, 57, 255, 0.29); box-shadow: 0 2px 10px 0 rgba(142, 57, 255, 0.29); }.innie{ display:inline-block; width: 100%; background: black; padding: 15px 0px; text-align: center; }

 <div class="container"> <div class="rainbow-gradient-border"> <span class="outie"> <span class="innie"> Log In </span> </span> </div> </div>