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in Technique[技术] by (71.8m points)

html - How do I remove the top margin in a web page?

I have had this problem with every web page I have created. There is always a top margin above the 'main container' div I use to place my content in the center of the page. I am using a css style sheet and have set margins and padding in the body to 0px and set the margin and padding to 0 in the div:

body{
    margin-top: 0px; 
    margin-bottom: 0px; 
    margin-left: 0px; 
    margin-right: 0px;
    padding: 0;
    color: black; 
    font-size: 10pt; 
    font-family: "Trebuchet MS", sans-serif;
    background-color: #E2E2E2;
}

div.mainContainer{
    height: auto; 
    width: 68em;
    background-color: #FFFFFF;
    margin: 0 auto; 
    padding: 0;
}

I have looked online many times, but all I can see to do is set these margin and padding attributes. Is there something else I should be doing? The margin exists in IE and Firefox.

Here is a more thorough look at the code (it is in the beginning stages of creation, so there isn't much in it...)

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <!-- TemplateBeginEditable name="doctitle" -->
        <title></title>
        <!-- TemplateEndEditable -->
        <!-- TemplateBeginEditable name="head" --><!-- TemplateEndEditable -->
        <link href="../Styles/KB_styles1.css" rel="stylesheet" type="text/css" />
    </head>
    <body>
        <div class="mainContainer">
            <p>Here is the information</p>
        </div>
    </body>
</html>

Here is the CSS:

@charset "utf-8";
/* CSS Document */

body{
    margin-top: 0px; 
    margin-bottom: 0px; 
    margin-left: 0px; 
    margin-right: 0px;
    padding: 0;
    color: black; 
    font-size: 10pt; 
    font-family: "Trebuchet MS", sans-serif;
    background-color: #E2E2E2;
}

/* ---Section Dividers --------------------------------------------------------------*/
div.mainContainer{
    position: relative; 
    height: auto; 
    width: 68em;
    background-color: #FFFFFF;
    margin: 0 auto; 
    padding: 0;
}

div.header{
    padding: 0; 
    margin: 0;
}

div.leftSidebar{
    float: left;
    width: 22%; 
    height: 40em;
    margin: 0;
}

div.mainContent{
    margin-left: 25%;
}

div.footer{
    clear: both;
    padding-bottom: 0em; 
    margin: 0;
}

/* Hide from IE5-mac. Only IE-win sees this. */
   * html div.leftSidebar { margin-right: 5px; }
   * html div.mainContent {height: 1%; margin-left: 0;}
/* End hide from IE5/mac */
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1 Answer

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by (71.8m points)

Is your first element h1 or similar? That element's margin-top could be causing what seems like a margin on body.


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