<link rel="preload" as="style" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-
bootstrap/4.5.0/css/bootstrap.min.css"
integrity="sha256-aAr2Zpq8MZ+YA/D6JtRD3xtrwpEz2IqOS+pWD/7XKIw=" crossorigin="anonymous"
onload="this.onload=null;this.rel='stylesheet'">
<noscript>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.5.0/css/bootstrap.min.css"
integrity="sha256-aAr2Zpq8MZ+YA/D6JtRD3xtrwpEz2IqOS+pWD/7XKIw=" crossorigin="anonymous">
</noscript>
为什么这只适用于Chrome?