1：定位+伪元素
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<html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head><body><div class="bag"><div class="a">文字文字文字文字文字文字文字文字文字文字</div></div><style>.bag {width: 1000px;height: 500px;position: relative;background: rgba(255, 255, 255, 0.3);}.a::before {position: absolute;top: 0;left: 0;bottom: 0;right: 0;background: url(http://csssecrets.io/images/tiger.jpg) center no-repeat;width: 1000px;height: 500px;content: "";z-index: -1;}</style>
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2：定位+蒙版
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<html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head><body><div class="bag"><div class="a">文字文字文字文字文字文字文字文字文字文字</div></div><style>.bag {background-size: cover;width: 1000px;height: 500px;background: url(http://csssecrets.io/images/tiger.jpg) center no-repeat;position: relative;}.a {position: absolute;top: 0;left: 0;bottom: 0;right: 0;width: 1000px;height: 500px;background: rgba(255, 255, 255, 0.3);}</style>
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基于VMD+CNN-BiLSTM的故障分类)
![[Mac软件]ColorWell For Mac 7.4.0调色板生成器](http://pic.xiahunao.cn/[Mac软件]ColorWell For Mac 7.4.0调色板生成器)
生成对抗网络和强化学习数据集(计算机视觉))
