如何让两个div并排在内部div弹出？

要让两个div并排显示，并且内部的div可以弹出，可以使用CSS的Flexbox布局和一些JavaScript来实现。以下是一个完整的示例：

HTML结构

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Div Side by Side with Popup</title>
    <link rel="stylesheet" href="styles.css">
</head>
<body>
    <div class="container">
        <div class="box" id="box1">
            Box 1
            <div class="popup" id="popup1">Popup Content 1</div>
        </div>
        <div class="box" id="box2">
            Box 2
            <div class="popup" id="popup2">Popup Content 2</div>
        </div>
    </div>
    <script src="script.js"></script>
</body>
</html>

CSS样式

/* styles.css */
body {
    font-family: Arial, sans-serif;
}

.container {
    display: flex;
    justify-content: space-around;
    padding: 20px;
}

.box {
    position: relative;
    width: 200px;
    height: 200px;
    background-color: #f0f0f0;
    border: 1px solid #ccc;
    text-align: center;
    line-height: 200px;
    cursor: pointer;
}

.popup {
    display: none;
    position: absolute;
    top: 0;
    left: 100%;
    width: 200px;
    height: 200px;
    background-color: #fff;
    border: 1px solid #ccc;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

JavaScript代码

// script.js
document.addEventListener('DOMContentLoaded', function() {
    const boxes = document.querySelectorAll('.box');

    boxes.forEach(box => {
        box.addEventListener('mouseenter', function() {
            const popup = this.querySelector('.popup');
            popup.style.display = 'block';
        });

        box.addEventListener('mouseleave', function() {
            const popup = this.querySelector('.popup');
            popup.style.display = 'none';
        });
    });
});