lovecoding
/
W250511


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body{
            background-color: #f0f4c3;
        }

        .content{
            width: 600px;
            height: 600px;
            background-color: #fff;
            position: absolute;
            top: 50%;
            left: 50%;
            margin-top: -300px;
            margin-left: -300px;
            border-radius: 20px;
            box-shadow: 0 0 10px rgba(0,0,0,0.5);
            padding-top: 20px;
        }
        .content-info h1{
            text-align: center;
            color: #689f38;
        }
        .content-info .info-center{
            width: 300px;
            margin: 0 auto;
            text-align: center;
        }
        .content-info .info-bottom{
            text-align: center;
            color: #999;
            font-size: 12px;
        }
        .content-bubble{
            width: 500px;
            height: 350px;
            background-color: #b2dfdb;
            margin:0 auto;
            border-radius: 20px;
            position: relative;
        }
        .bubble-item{
            width: 100px;
            height: 100px;
            background-color: #81d4fa;
            border-radius: 50%;
            border:3px solid #fff;
            position: absolute;
            top:50%;
            margin-top: -50px;
            left:30px;
            text-align: center;
            line-height: 100px;
        }
        .bubble-item span{
            color: #fff;
        }
        .bubble-item::after{
            content: "";
            display: block;
            width: 30%;
            height: 20%;
            background-color: #fff;
            position: absolute;
            top:20%;
            left: 20%;
            border-radius: 50%;
            opacity: 0.3;
        }
        .bubble-item:nth-child(2){
            left: 23%;
            top: 40%;
            background-color: #ffd54f;
            width: 80px;
            height: 80px;
            line-height: 80px;
        }
        .bubble-item:nth-child(3){
            left: 53%;
            top: 60%;
            background-color: red;
            width: 60px;
            height: 60px;
            line-height: 60px;
            
        }
        .bubble-item:hover{
            cursor: pointer;
            z-index: 1;
            /* 控制元素缩放 */
            transform: scale(1.2);
        }

        /* .bubble-item:first-child:hover{
            width: 108px;
            height: 108px;

        } */
        .footer{
            background-color: #fffde7;
            color: #b28704;
            /* 脱离文档流后的元素宽度跟内容撑开 */
            position: fixed;
            left: 0;
            bottom: 0;
            width: 100%;
            text-align: center;

        }
    </style>
</head>
<body>
    <div class="container">
        <div class="content">
            <div class="content-info">
                <h1>趣味气泡 Position 练习</h1>
                <p class="info-center"><strong>任务：</strong> 观察并理解气泡的定位方式，鼠标悬停气泡试试看！</p>
                <p class="info-bottom">（气泡用 absolute，气泡区用 relative，底部说明条用 fixed）</p>
            </div>
            <div class="content-bubble">
                <div class="bubble-item">
                    <span>A</span>
                </div>
                <div class="bubble-item">
                    <span>B</span>
                </div>
                <div class="bubble-item">
                    <span>C</span>
                </div>
            </div>
        </div>
        <div class="footer">
            <p>本页面用于练习 position: relative / absolute / fixed 及 hover/伪元素效果</p>
        </div>
    </div>
</body>
</html>