<!DOCTYPE html>

<html lang="en">
  
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <div class="box">
    <img src="https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2FTMbvcPmmHwEIl1t7uHFpgSS8smUsiNG7SjFMz0GSUHo4p1625182755692compressflag.jpeg&thumbnail=660x2147483647&quality=80&type=jpg" />
    <p>iphone 4s</p>
    <h1></h1>
  </div>
</body>

</html>
body {
  margin: 0;
  padding: 0;
}
.box {
  position: relative;
  display: inline-block;
  width: 100%;
  height: 100%;
}
img {
  width: 100%;
}
/* 蒙版1 */
p {
  position: absolute;
  border-radius: 10px;
  height: 150px;
  width: calc(100% * .5);
/*   width: 350px; */
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  z-index: 999;
  color: white;
  line-height: 150px;
  font-size: 50px;
  font-weight: 250;
  text-align: center;
  background-color: rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(8px);
}
/* 蒙板2 */
h1 {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  margin: 0;
  background-color: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
}

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