overflow-visible-viewport-001

Overflow set to visible is interpreted as auto on viewport

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Flags
dom
Assertion
When 'overflow: visible' is set on the viewport it is interpreted as 'auto' but is still returns a computed value of 'visible'.

Source

 1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
 2 <html id="test">
 3     <head>
 4         <title>CSS Test: Overflow set to visible is interpreted as auto on viewport</title>
 5         <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
 6         <link rel="help" href="http://www.w3.org/TR/CSS21/visufx.html#overflow">
 7         <meta name="flags" content="dom">
 8         <meta name="assert" content="When 'overflow: visible' is set on the viewport it is interpreted as 'auto' but is still returns a computed value of 'visible'.">
 9         <style type="text/css">
10             body
11             {
12                 width: 500in;
13                 height: 500in;
14             }
15             html
16             {
17                 overflow: visible;
18             }
19             #result
20             {
21                 border: 1px solid blue;
22             }
23         </style>
24     </head>
25     <body>
26         <p>Test passes if the page has an active scrolling mechanism available to scroll the page and the word 'visible' is inside the box below.</p>
27         <div id="result"></div>
28         <script type="text/javascript">
29             
30             var testEl = document.getElementById('test');
31             var propertyValue = window.getComputedStyle(testEl, null).overflow;
32             var newTextNode = document.createTextNode(propertyValue);
33             document.getElementById("result").appendChild(newTextNode);
34             
35         </script>
36     </body>
37 </html>