MyWebLearnProjects/02_半月.html at main · 1tang1315/MyWebLearnProjects · GitHub

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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>Half Moon</title>
  <style>
     *{

        margin: 0;

        padding: 0;

        background-color: black;

    }
    div{

         position: absolute;

         top: 50%;

         left: 50%;

         transform: translate(-50%,     -50%);

         height: 100px;

         width: 100px;

         box-shadow: -15px 15px 0     5px      white  ;

         border-radius: 50%;

    }
  </style>
</head>
<body>
  <div></div>
</body>
</html>