<!DOCTYPE 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>可操作性功能展示</title>
    <!-- Theme CSS -->
    <link type="text/css" href="../assets/css/theme.css" rel="stylesheet">
    <!-- Demo CSS - No need to use these in your project -->
    <link type="text/css" href="../assets/css/demo.css" rel="stylesheet">
    <style>
        .graph {
     