<!DOCTYPE html>
<html>
<head>
    <title>About Page</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            text-align: center;
            margin-top: 50px;
            background:url(../image/back2.png);
            background-size: cover;
            background-attachment: fixed;
            background-position: 60px -40px;
        }
        h1 {
            color: #333;
        }
        

    
        .sidebar {
            height: 100%;
            width: 100px;
            position: fixed;
            top: 0;
            left: 0;
            padding-top: 20px;
            background-color: #111;
            transition: width 0.6s;
            z-index: 1; /* 确保侧边栏在背景之上 */
        }
        .sidebar:hover {
            width: 200px;
        }
        .sidebar a {
            padding: 20px 15px; /* 增加高度 */
            text-decoration: none;
            font-size: 18px;
            color: white;
            display: block;
            transition: 0.3s;
        }
        .sidebar a:hover {
            background-color: #575757;
        }
        .sidebar div {
            width: 0;
            height: 0;
            position: absolute;
            top: 0;
            left: 0;
            background-color: #111;
            transition: width 0.3s;
            z-index: -1; /* 确保侧边栏在背景之上 */
        }

        @keyframes fadeIn {
            to {
                opacity: 1; /* 最终透明度 */
        }
        }

        p {
            display: none;
            background-color: rgba(212, 212, 218, 0.936);
            overflow: hidden;
            width: 600px;
            height: 40px;
            padding-top: 30px;
            padding-bottom: 50px;
            padding-right: 30px;
            padding-left: 30px;
            transition: height 10s ease;
            
        }

        div:hover p {
            margin: auto;
            text-align: left;
            opacity: 0;
            animation: fadeIn 1.5s forwards;
            display: block;
            
        }
        .title {
            border-left: 6px solid rgb(42, 116, 147);
            margin: auto;
            color: #080959;
            font-weight: bold;
            background-color: rgba(63, 63, 65, 0.788);
            width: 600px;
            height: 30px;
            padding-top: 10px;
            padding-bottom: 10px;
            padding-right: 30px;
            padding-left: 30px;
        }
        .title2 {
            border-left: 6px solid rgb(42, 116, 147);
            margin: auto;
            color: #00000aa1;
            font-weight: bold;
            background-color: rgba(63, 63, 65, 0.758);
            width: 600px;
            height: 30px;
            padding-top: 10px;
            padding-bottom: 10px;
            padding-right: 30px;
            padding-left: 30px;
        }
    </style>
</head>
<body>
    <div class="sidebar">
        <a href="index.html">Home</a>
        <a href="tool.html">Tool</a>
        <a href="media.html">Media</a>
        <a href="fun.html">Fun</a>
        <a href="about.html">About</a>
    </div>
    <div style="margin-left:90px;margin-top: 10%;">
        <h2  class="title">About the Author</h2>
            <p>"_unexp",a student who now study in HUST,as well as a devoted Arknights player.
                <br>Here is his id: U202414891.
                <br>He belongs to: School of Computer Science and Technology.
            </p>
            </div>
        </div>
    </div>
    </div>
    <div style="margin-left:90px;">
        <h2 class="title">What is This Page for</h2>
            <p>This page helps _unexp to reach information about Arknights more easily
                <br>Well, and it also helps him to comlete his homework.
                <br>That's all. What are you looking for? It won't print "Hello World" here.
            </p>
            </div>
    </div>
    </div>
    <div style="margin-left:90px;">
        <h2 class="title">Special Thanks</h2>
            <p>To my teacher, who gives me the chance to learn web programming.
                <br>To Arknight, which brings me a lot of fun.
                <br>So don't forget to install and try Arknights!!!
            </p>
            </div>
    </div>
    </div>
    <div style="margin-left:90px;">
        <h2 class="title2">作业信息</h2>
            <p>姓名:原翌飞
                <br>班级:计科启明2401
                <br>学号:U202414891
            </p>
            </div>
    </div>
    </div>
</body>
</html>