HTML Code

<!DOCTYPE html>



<html lang="en">



<head>



  <meta charset="UTF-8">



  <meta name="viewport" content="width=device-width, initial-scale=1.0">



  <title>CSS mask-origin border-box Example</title>



  <style>



    body {



      font-family: system-ui, sans-serif;



      padding: 1.5rem;



      line-height: 1.6;



      background: #f8fafc;



    }







    .mask-border {



      width: 280px;



      height: 200px;



      padding: 20px;



      border: 10px solid #334155;



      background: url('/images/valley-pattern.jpg') center/cover;



      -webkit-mask-image: url('/images/apple.png');



      mask-image: url('/images/apple.png');



      -webkit-mask-size: contain;



      mask-size: contain;



      -webkit-mask-repeat: no-repeat;



      mask-repeat: no-repeat;



      -webkit-mask-origin: border-box;



      mask-origin: border-box;



    }



  </style>



</head>



<body>



  <h1>border-box Mask Origin</h1>



  <div class="mask-border"></div>



</body>



</html>

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CSS mask-origin Property - border-box