CSS闪电按钮效果

<template> <view class="const"> <div class="voltage-button"> <button>闪电按钮</button> <svg version="1.1" xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" viewBox="0 0 234.6 61.3" preserveAspectRatio="none" xml:space="preserve"> <filter id="glow"> <feGaussianBlur class="blur" result="coloredBlur" stdDeviation="2"></feGaussianBlur> <feTurbulence type="fractalNoise" baseFrequency="0.075" numOctaves="0.3" result="turbulence"> </feTurbulence> <feDisplacementMap in="SourceGraphic" in2