certificate 相关问题

我不确定我错过了什么。我尝试添加类并使用它们来添加带有align-items和justify-content的flexbox。这是我的代码：索引.HTML 我不确定我错过了什么。我尝试添加类并使用它们来添加带有align-items和justify-content的flexbox。这是我的代码：索引.HTML <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title id="title">Edgar Allan Poe</title> <link rel="stylesheet" href="styles.css"> </head> <body> <header> <h1>Edgar Allan Poe</h1> </header> <main id="main"> <div class="pic" id="img-div"> <img id="image" src="https://i.guim.co.uk/img/static/sys-images/Books/Pix/pictures/2009/1/19/1232367130592/Portrait-of-Edgar-Allan-P-001.jpg?width=465&dpr=1&s=none" alt="black and white portrait of Edgar Allan Poe" ><figcaption id="img-caption">Picture provided from The Guardian Website</figcaption> </div> <h2>A Man of Darkness</h2> <div id="tribute-info"> <p> Edgar Allan Poe was well known for his dark and macabre literature. Stories filled with mystery and beautiful women of love. Stories filled with betrayal and death. Here is a list of his work: </p> <ul> <li>Metzengerstein (1832)</li> <li>A Tale of Jerusalem (1832)</li> <li>Ms. Found in a Bottle (1833)</li> <li>Shadow (1835)</li> <li>Morella (1835)</li> <li>Berenice (1835)</li> <li>The Unparalleled Adventures of One Hans Pfaall (1835)</li> <li>King Pest (1835)</li> <li>Four Beasts in One - The Homo-Cameleopard (1836)</li> <li>Ligeia (1838)</li> <li>A Predicament (1838)</li> <li>William Wilson (1839)</li> <li>The Devil in the Belfry (1839)</li> <li>The Journal of Julius Rodman (1840)</li> <li>The Man of the Crowd (1840)</li> <li>A Descent into the Maelstrom (1841)</li> <li>Never Bet the Devil Your Head (1841)</li> <li>The Pit and the Pendulum (1842)</li> <li>The Masque of the Red Death (1842)</li> <li>and more...</li> </ul> <h3> For a continued list of his works visit <a target="_blank" id="tribute-link" href="https://www.addall.com/books-in-order/edgar-allan-poe/"> ADDALL</a></h3> </div> </main> </body> </html> 样式.CSS body { background-color: #ffe4e1; } .pic { background-color: #d8bfd8; } img { max-width: 100%; height: auto; margin: 0 auto; padding: 3px; border: 2px solid black; display: block; align-items: center; } main { text-align: center; } h1, h2 { text-align: center; font-family: Cursive; } p{ font-family: Sans-serif; } ul { text-align: left; } ` 我尝试添加 display: flex;与对齐项目：居中；并调整内容：中心；到各种类和选择器。我要么更改整个代码并导致其“中断”，要么根本不做任何更改。我不知道我还能怎样得到最后一句话。您的代码确实使图像居中（水平）。但无论如何，我会建议一些改进。将图像和标题包装在 figure 元素中然后你可以将它们放在一起 .pic { display: flex; justify-content: center; background-color: #d8bfd8; } figure { margin: 0; } <div class="pic"> <figure> <img src="https://i.guim.co.uk/img/static/sys-images/Books/Pix/pictures/2009/1/19/1232367130592/Portrait-of-Edgar-Allan-P-001.jpg?width=465&dpr=1&s=none" alt="black and white portrait of Edgar Allan Poe"> <figcaption>Picture provided from The Guardian Website</figcaption> </figure> </div> 如果您想让标题居中，请尝试以下操作： figcaption {text-align: center;}

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我的开发机器中有一个需要证书的 WCF 客户端，并且工作正常。部署到生产服务器后，出现以下错误： [CryptographicException：具体...

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使用 Java 中的 Bouncy Castle 自签名 X509 证书

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