CSS代码：
.icon {
display: inline-block;
width: 20px; height: 20px;
background-color: currentColor;
-webkit-clip-path: var(--clipPath);
clip-path: var(--clipPath);
vertical-align: middle;
margin-right: 1ch;
}
HTML代码：
<svg version="1.1" xmlns="http://www.w3.org/2000/svg" width="0" height="0" style="position:absolute;"><clipPath id="eye"><path transform="scale(0.034722222222222224, 0.0390625)" d="M288 144a110.94 110.94 0 0 0-31.24 5 55.4 55.4 0 0 1 7.24 27 56 56 0 0 1-56 56 55.4 55.4 0 0 1-27-7.24A111.71 111.71 0 1 0 288 144zm284.52 97.4C518.29 135.59 410.93 64 288 64S57.68 135.64 3.48 241.41a32.35 32.35 0 0 0 0 29.19C57.71 376.41 165.07 448 288 448s230.32-71.64 284.52-177.41a32.35 32.35 0 0 0 0-29.19zM288 400c-98.65 0-189.09-55-237.93-144C98.91 167 189.34 112 288 112s189.09 55 237.93 144C477.1 345 386.66 400 288 400z"/></clipPath><clipPath id="paper-plane"><path transform="scale(0.0390625, 0.0390625)" d="M440 6.5L24 246.4c-34.4 19.9-31.1 70.8 5.7 85.9L144 379.6V464c0 46.4 59.2 65.5 86.6 28.6l43.8-59.1 111.9 46.2c5.9 2.4 12.1 3.6 18.3 3.6 8.2 0 16.3-2.1 23.6-6.2 12.8-7.2 21.6-20 23.9-34.5l59.4-387.2c6.1-40.1-36.9-68.8-71.5-48.9zM192 464v-64.6l36.6 15.1L192 464zm212.6-28.7l-153.8-63.5L391 169.5c10.7-15.5-9.5-33.5-23.7-21.2L155.8 332.6 48 288 464 48l-59.4 387.3z"/></clipPath><clipPath id="comment"><path transform="scale(0.0390625, 0.0390625)" d="M256 32C114.6 32 0 125.1 0 240c0 47.6 19.9 91.2 52.9 126.3C38 405.7 7 439.1 6.5 439.5c-6.6 7-8.4 17.2-4.6 26S14.4 480 24 480c61.5 0 110-25.7 139.1-46.3C192 442.8 223.2 448 256 448c141.4 0 256-93.1 256-208S397.4 32 256 32zm0 368c-26.7 0-53.1-4.1-78.4-12.1l-22.7-7.2-19.5 13.8c-14.3 10.1-33.9 21.4-57.5 29 7.3-12.1 14.4-25.7 19.9-40.2l10.6-28.1-20.6-21.8C69.7 314.1 48 282.2 48 240c0-88.2 93.3-160 208-160s208 71.8 208 160-93.3 160-208 160z"/></clipPath></svg>
<ul id="ul">
<li><i class="icon" style="--clipPath:url(#paper-plane)"></i>分享</li>
<li><i class="icon" style="--clipPath:url(#eye)"></i>预览</li>
<li><i class="icon" style="--clipPath:url(#comment)"></i>评论</li>
</ul>
<p>改变颜色：<input type="color" oninput="ul.style.color=this.value"></p>
