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About thichtomo

  • Birthday December 12

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  1. The code is as following: file:index.php <?php include("fix.php");?> file: fix.php <html> <head> <title></title> <link rel="stylesheet" type="text/css" href="styles/styles.css" /> </head> <body style="margin:0px;"> <h1 style="background-color:red;margin:0px;">Problem</h1> </body></html> When I open file fix.php in firefox and chrome are ok (there is no margin between tag h1 and top boundary of browsers). However, when I open file index.php, in firefox is OK (no margin), but in Chrome, there a margin between them. Please, explain to me the reason. Is it because of the function require () ???
  2. I have a piece of code like following: body { margin:0px; font-family:"Segoe UI",Tahoma,Verdana; font-size:14px; background-color:#E3E3E3;}h1 { background-color:#9dc45f;} <html> <head> <title></title> <link rel="stylesheet" type="text/css" href="styles/styles.css"/> </head> <body> <div id="header"> <h1>Tag h1 is displayed differently in Chrome and Firefox. Please, tell me why? </h1> </div> </body></html> In Chrome, there is no margin between <h1> and top boundary of browser (as expected). But in Firefox, there is still a distance, approximately 19px, between them. I don't find out the reason of this issue. Please, tell me why!
  3. If we use: position:absolute, it works well even in firefox. In my opinion, if we put margin-left and margin-right as auto, browsers will automatically set divs horizontally center.
  4. I have a piece of CSS as following (in order to align a div vertically center) #center { position:relative; height:200px; width:500px; top:50%; margin:-100px auto 0px auto; border-radius:10px; border:1px solid white;} In Chrome, it works well, as in the first illustration: but in Firefox, it's displayed as following: Please, explain to me the reason of the issue. You can check this issue in your browser by link: http://thichtomo.com/example/
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