搜索

回答

 .popup {
   position: fixed;
   height: fit-content;
   inset: 0;
   margin: auto;
   background-color: #fff;
   padding: 20px;
   width: fit-content;
}

完整代码如下：

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">

    <style>

        .popup {
            position: fixed;
            height: fit-content;
            inset: 0;
            margin: auto;
            background-color: #fff;
            padding: 20px;
            width: fit-content;
        }
    </style>
</head>
<body>


    <p>
        Lorem, ipsum dolor sit amet consectetur adipisicing elit. Repellendus voluptate recusandae quasi ex commodi, facere itaque, exercitationem, totam minus soluta atque assumenda? Aspernatur, quod assumenda at praesentium totam enim nam!
    </p>
    <p>
        Lorem, ipsum dolor sit amet consectetur adipisicing elit. Repellendus voluptate recusandae quasi ex commodi, facere itaque, exercitationem, totam minus soluta atque assumenda? Aspernatur, quod assumenda at praesentium totam enim nam!
    </p>
    <p>
        Lorem, ipsum dolor sit amet consectetur adipisicing elit. Repellendus voluptate recusandae quasi ex commodi, facere itaque, exercitationem, totam minus soluta atque assumenda? Aspernatur, quod assumenda at praesentium totam enim nam!
    </p>
    <p>
        Lorem, ipsum dolor sit amet consectetur adipisicing elit. Repellendus voluptate recusandae quasi ex commodi, facere itaque, exercitationem, totam minus soluta atque assumenda? Aspernatur, quod assumenda at praesentium totam enim nam!
    </p>
    <p>
        Lorem, ipsum dolor sit amet consectetur adipisicing elit. Repellendus voluptate recusandae quasi ex commodi, facere itaque, exercitationem, totam minus soluta atque assumenda? Aspernatur, quod assumenda at praesentium totam enim nam!
    </p>
    <p>
        Lorem, ipsum dolor sit amet consectetur adipisicing elit. Repellendus voluptate recusandae quasi ex commodi, facere itaque, exercitationem, totam minus soluta atque assumenda? Aspernatur, quod assumenda at praesentium totam enim nam!
    </p>
    <div class="popup">
        我是弹出层
    </div>
</body>
</html>

还有一种古老的方式是：

.popup {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translatex(-50%) 
  translatey(-50%);

  background-color: #fff;
  padding: 20px;
  width: fit-content;
  height: fit-content;
}

完整代码如下：

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">

    <style>

        .popup {
            position: fixed;
            left: 50%;
            top: 50%;
            transform: translatex(-50%) translatey(-50%);

            background-color: #fff;
            padding: 20px;
            width: fit-content;
            height: fit-content;
        }
    </style>
</head>
<body>


    <p>
        Lorem, ipsum dolor sit amet consectetur adipisicing elit. Repellendus voluptate recusandae quasi ex commodi, facere itaque, exercitationem, totam minus soluta atque assumenda? Aspernatur, quod assumenda at praesentium totam enim nam!
    </p>
    <p>
        Lorem, ipsum dolor sit amet consectetur adipisicing elit. Repellendus voluptate recusandae quasi ex commodi, facere itaque, exercitationem, totam minus soluta atque assumenda? Aspernatur, quod assumenda at praesentium totam enim nam!
    </p>
    <p>
        Lorem, ipsum dolor sit amet consectetur adipisicing elit. Repellendus voluptate recusandae quasi ex commodi, facere itaque, exercitationem, totam minus soluta atque assumenda? Aspernatur, quod assumenda at praesentium totam enim nam!
    </p>
    <p>
        Lorem, ipsum dolor sit amet consectetur adipisicing elit. Repellendus voluptate recusandae quasi ex commodi, facere itaque, exercitationem, totam minus soluta atque assumenda? Aspernatur, quod assumenda at praesentium totam enim nam!
    </p>
    <p>
        Lorem, ipsum dolor sit amet consectetur adipisicing elit. Repellendus voluptate recusandae quasi ex commodi, facere itaque, exercitationem, totam minus soluta atque assumenda? Aspernatur, quod assumenda at praesentium totam enim nam!
    </p>
    <p>
        Lorem, ipsum dolor sit amet consectetur adipisicing elit. Repellendus voluptate recusandae quasi ex commodi, facere itaque, exercitationem, totam minus soluta atque assumenda? Aspernatur, quod assumenda at praesentium totam enim nam!
    </p>
    <div class="popup">
        我是弹出层
    </div>
</body>
</html>

网友回复

我知道答案，我要回答

我有问题

私活外包

回答

开发了一个网站ai聊天助手

一个月开发一套类似coze的智能体平台

部署一套内网离线ai助理

私有ai助理开发

类似如家的租房app开发

h5手机端考试网站开发

开发一个短剧解锁剧集的小程序

我要开发一个酒类拍卖交易平台

开发艺术品拍卖收藏买画卖画h5网站

帮我做个数字货币交易所网站

为啥所有的照片分辨率提升工具都会修改照片上的图案细节？

js如何在浏览器中将webm视频的声音分离为单独音频？

微信小程序如何播放第三方域名url的mp4视频？

ai多模态大模型能实时识别视频中的手语为文字吗？

如何远程调试别人的chrome浏览器获取调试信息？

为啥js打开新网页window.open设置窗口宽高无效？

浏览器中js的navigator.mediaDevices.getDisplayMedia屏幕录像无法录制SpeechSynthesisUtterance产生的说话声音？

js中mediaRecorder如何录制window.speechSynthesis声音音频并下载？

python如何直接获取抖音短视频的音频文件url？

js在浏览器中如何使用MediaStream与MediaRecorder实现声音音频多轨道混流？