<link rel="icon" type="image/x-icon" sizes="16x16 32x32 48x48" href="favicon.ico">
<link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png">
<link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png">
<link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png">注意：表情符号在不同操作系统和浏览器中的显示效果可能有所不同