Add style="text-align:center;"
try below code
<html>
<head>
<title>Test</title>
</head>
<body>
<div style="text-align:center;vertical-align:middle;">
<img src="queuedError.jpg" style="margin:auto; width:200px;" />
</div>
</body>
</html>
You need to render it as block level;
img {
display: block;
width: auto;
margin: auto;
}
I have found... margin: 0 auto; works for me. But I have also seen it NOT work due to the class being trumped by another specificity that had ... float:left; so watch for that you may need to add ... float:none; this worked in my case as I was coding a media query.
open div then put
style="width:100% ; margin:0px auto;"
image tag (or) content
close div
<div style="text-align:center;">
<img src="queuedError.jpg" style="margin:auto; width:200px;" />
</div>
i know this is an old post, but wanted to share how i solved the same problem.
My image was inheriting a float:left from a parent class. By setting float:none I was able to make margin:0 auto and display: block work properly. Hope it may help someone in the future.
I've found that I must define a specific width for the object or nothing else will make it center. A relative width doesn't work.
Source: Stackoverflow.com