使用字体真棒图层在圆圈内渐变

Question

我正在尝试使用 font-awsome layers 和 css 实现与下面所附图片相同的效果。除了渐变，我什么都能实现。是否可以不使用任何额外的图形？

到目前为止我的代码：

<script  src="https://use.fontawesome.com/releases/v5.8.1/js/all.js"></script>
<span class="fa-layers fa-fw fa-7x">
        <i class="far fa-circle progress-circle" ></i>
        <i class="far fa-circle progress-circle-small" data-fa-transform="shrink-8" style="color: white;"></i>
        <i class="fas fa-sync-alt progress-circle-small" data-fa-transform="shrink-12" style="color: white;"></i>
    </span>

Answer 1

您可以使用如下所示的伪元素添加它

.custom {
  position: relative;
  z-index: 0;
}

.custom:before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width:1em;
  margin:auto;
  border-radius: 50%;
  background: linear-gradient(to right, blue, red);
  transform:scale(0.9);
}

<script data-search-pseudo-elements src="https://use.fontawesome.com/releases/v5.8.1/js/all.js"></script>
<span class="fa-layers fa-fw fa-7x custom">
    <i class="far fa-circle progress-circle" ></i>
    <i class="far fa-circle progress-circle-small" data-fa-transform="shrink-8" style="color: white;"></i>
    <i class="fas fa-sync-alt progress-circle-small" data-fa-transform="shrink-12" style="color: white;"></i>
</span>

<span class="fa-layers fa-fw fa-4x custom">
    <i class="far fa-circle progress-circle" ></i>
    <i class="far fa-circle progress-circle-small" data-fa-transform="shrink-8" style="color: white;"></i>
    <i class="fas fa-sync-alt progress-circle-small" data-fa-transform="shrink-12" style="color: white;"></i>
</span>

<span class="fa-layers fa-fw fa-2x custom">
    <i class="far fa-circle progress-circle" ></i>
    <i class="far fa-circle progress-circle-small" data-fa-transform="shrink-8" style="color: white;"></i>
    <i class="fas fa-sync-alt progress-circle-small" data-fa-transform="shrink-12" style="color: white;"></i>
</span>

使用字体真棒图层在圆圈内渐变

Gradient inside circle using fontawsome layers

css

font-awesome

font-awesome-5