为什么不显示图标字体

html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Documenttitle>
    <link rel="stylesheet" href="testfont/iconfont.css">
    
    <style>
        *{margin: 0px;padding: 0px;}
        .box{width: 955px;height: 1420px;margin: 0 auto;background: yellow;
        display: flex;flex-direction: column;
        }
        /* 头部设置 */
        .box header{height: 124px;background: #232939;display: flex;color: white;}
        header i.iconfont{width: 118px;height: 124px;line-height: 124px;text-align: center;
        font-size: 48px;}
        header span{flex:1;height: 124px;line-height: 124px;text-align: center;
        font-size: 40px;}
        /* 因为header设置成了弹性盒，所以i标签和span标签能设宽高了。 */

        footer{height: 128px;background: gray;}
        section{flex: 1;}

    style>
head>
<body>
    <div class="box">
        <header>
            <i class="iconfont icon-zixun">i>
            <span>账单span>
            <i class="iconfont icon-wode">i>
            <i class="iconfont icon-fangdajing">i>
            <i class="iconfont icon-jia">i>
        header>
        <section>section>
        <footer>footer>
    div>
body>
html>

img

检查下iconfont.css的路径是否正确

关键代码没放出来啊