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<!DOCTYPE html>
<html>
<head>
<style> 
#myDIV {
  margin: auto;
  border: 1px solid black;
  outline: coral solid 5px;
  width: 300px;
  height: 300px;
}
</style>
</head>
<body>
​
<h1>Change outline-width with JavaScript</h1>
​
<p>Click the "Try it" button to change the outline-width property of the DIV element:</p>
​
<button onclick="myFunction()">Try it</button>
​
<div id="myDIV">
  <h1>Hello</h1>
</div>
​
<script>
function myFunction() {
  document.getElementById("myDIV").style.outlineWidth = "12px";
}
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/cssref/tryit.asp?filename=trycss_js_outline-width by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:01:21 GMT -->
</html>
​
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