How can make a div in center all devices using CSS and HTML ?

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I was trying but not success. pls solve my problem.

What I have tried:

<!DOCTYPE html>





  <title>Bootstrap Example

  <meta charset="utf-8">

  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  
  
  
  .center{
   height:300px;
   width:300px;
   background:#eee;
   position:absolute;
   margin:-150px 0 0 -150px;
   left:50px;
   top:50px;
   } 
  


<div class="center"></div>

Posted 18-Jan-17 17:43pm

Manoj_KumarP

Updated 18-Jan-17 19:32pm

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Peter Leow · Answer 1 · 2017-01-18T18:40:00

Solution 1

Check this out: The complete guide to centering a div[^]

Posted 18-Jan-17 18:40pm

Peter Leow

jgakenhe · Answer 2 · 2017-01-18T19:32:00

I see a lot of problems, including missing closing tags and missing body tag. Additionally, your top margin, being negative, will force the text be above of the screen; so you won't see it.

Peter's comment above will give you the answer, but, my suggestion to you is start from the beginning and read a beginner's tutorial on CSS (CSS Tutorial[^]). It'll take an hour and about 3/4 through, you'll get into layouts (CSS Layout - Horizontal & Vertical Align[^]).

<!DOCTYPE html>
<html>
<head>
<style>
.center{margin: auto; width: 60%; border: 3px solid #000; padding: 10px;}
.center-text{text-align: center;}
</style>
</head>
<body>
<div class="center">
  	<p>The div is centered, but the text is not.</p>
	<h4 class="center-text">This is centered text.</h4>
</div>
</body>
</html>