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【洛谷】CF652D 題解

<html>
    <head>
        <meta charset="utf-8">
        <title></title>
        <style type="text/css">
            html{   
                width: 100%;   
                height: 100%;   
                overflow: hidden;   
                font-style: sans-serif;   
            }   
            body{
                width: 
100%; height: 100%; font-family: 'Open Sans',sans-serif; margin: 0; background-color: #4A374A; } #login{ position: absolute; top: 50%; left:50%; margin:
-150px 0 0 -150px; width: 300px; height: 300px; } #login h1{ color: #fff; text-shadow:0 0 10px; letter-spacing: 1px; text-align: center; } h1{ font
-size: 2em; margin: 0.67em 0; } input{ width: 278px; height: 18px; margin-bottom: 10px; outline: none; padding: 10px; font-size: 13px; color: #fff; text-shadow:1px 1px 1px; border-top: 1px solid #312E3D; border-left: 1px solid #312E3D; border-right: 1px solid #312E3D; border-bottom: 1px solid #56536A; border-radius: 4px; background-color: #2D2D3F; } .but{ width: 300px; min-height: 20px; display: block; background-color: #4a77d4; border: 1px solid #3762bc; color: #fff; padding: 9px 14px; font-size: 15px; line-height: normal; border-radius: 5px; margin: 0; } </style> </head> <body> <div id="login"> <h1>Login</h1> <form method="post"> <input type="text" name="username" id="username" value="" required="required" placeholder="使用者名稱" /> <br/> <input type="text" name="password" id="password" value="" required="required" placeholder="密碼"/> <br/> <button class="but" type="submit">登入</button> </form> </div> </body> </html>