效果 (源码网盘地址在最后)
源码
index.html
<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="UTF-8">
<link rel="stylesheet" href="./style.css">
</head>
<body>
<!-- partial:index.partial.html -->
<div class="container">
<span>LOADING</span>
<span class="drop"></span>
</div>
<svg>
<defs>
<filter id="gooey">
<feGaussianBlur in="SourceGraphic" stdDeviation="5" result="blur"/>
<feColorMatrix in="blur" values="1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 35 -20