css/css-overflow/overflow-clip-margin-visual-box-and-value-with-border-radius-ref.html

<!doctype html>
<meta charset="utf-8">
<title>Verifies overflow-clip-margin supports visual-box</title>
<link rel="help" href="https://www.w3.org/TR/css-overflow-3/#propdef-overflow-clip-margin">
<link rel="author" title="Khushal Sagar" href="mailto:khushalsagar@chromium.org">
<style>
  .container {
    width: 100px;
    height: 100px;
    overflow: visible;
    padding: 10px;
    border: 10px solid black;
    margin: 10px;
    border-radius: 0px 15px 25px 35px;
    background: grey;
  }

  .inner_border_box {
    width: 150px;
    height: 150px;
    position: relative;
    top: -25px;
    left: -25px;
    background: blue;
    border-radius: 0px 15.55px 30px 40px;
  }

  .inner_padding_box {
    width: 130px;
    height: 130px;
    position: relative;
    top: -15px;
    left: -15px;
    background: blue;
    border-radius: 0px 10px 20px 30px;
  }

  .inner_content_box {
    width: 110px;
    height: 110px;
    position: relative;
    top:  -5px;
    left: -5px;
    background: blue;
    border-radius: 0px 0px 10px 20px;
  }
</style>
<div class="container">
  <div class="inner_border_box"></div>
</div>
<div class="container">
  <div class="inner_padding_box"></div>
</div>
<div class="container">
  <div class="inner_content_box"></div>
</div>