My code got unexpectedly wrapped in an unnecessary div by Internet Explorer

Oh no, my layout on my aspx page looks totally messed up in IE9! It's perfect in Chrome though:

But in IE9, it's all out of whack and looks like this:

I finally found out the reason behind this strange display. Apparently IE9 wrapped my "save Note" button, description label, and description textbox in a div and made it float right. And the maincontent holder is showing up twice because IE duplicated it but in the duplicated content holder, there are no controls or anything - just the background color.

Here is the HTML that was generated:

 <div class="mainContentHolder">
    <span style="display: none;">
        <label>File</label>
        <label style="width: auto;" id="lblCaseFileID">2011630988 - </label>
    </span>
    <h3 id="quickNoteHeader">Quick Note: 2011630988 / 10/04/2012 08:47:12 <div style="float: right;">USES CURRENT DATE AND TIME<div></div></div></h3><div style="float: right;"><div>

    <span>
        <label class="inlineLbl">Description</label>
        <input style="width: 82%;" id="txtDescription" name="txtDescription" type="text">
        <span style="color: red; display: none;" id="ctl02" class="validation" title="Description is required">*</span>
        <input style="width: 75px;" id="saveNote" onclick="saveNewQuickNote()" name="saveNote" value="Save Note" type="button">
    </span>
    </div>
    <input id="hidCaseFileID" name="hidCaseFileID" value="2011630988" type="hidden">
    <input id="hidInvestigatorLoggedOnID" name="hidInvestigatorLoggedOnID" value="25" type="hidden">
</div>

<div class="mainContentHolder">
<div style="float: right;">
</div>

This is the content of my .aspx page:

        <!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>
        </head>
    <body>
    <form id="form1" runat="server">
    <div class="mainContentHolder">
    <span style="display:none;">
        <label>File</label>
        <label style="width:auto;" runat="server" id="lblCaseFileID"></label>
    </span>
    <h3 runat="server" id="quickNoteHeader">Quick Note</h3>
    <span>
        <label class="inlineLbl">Description</label>
        <input type="text" style="width:82%;" id="txtDescription" runat="server" />
        <asp:RequiredFieldValidator class="validation" ErrorMessage="*" Display="Dynamic" ControlToValidate="txtDescription" ToolTip="Description is required" runat="server" />
        <input type="button" ID="saveNote" style="width:75px;" Value="Save Note" runat="server" onclick="saveNewQuickNote()" />
    </span>
    </div>
    <asp:HiddenField ID="hidCaseFileID" runat="server" />
    <asp:HiddenField ID="hidInvestigatorLoggedOnID" runat="server" />
    </form>
</body>

Any ideas on how to fix this? I'm completely stumped about why IE decided to mess things up like this. EDIT: css:

.mainContentHolder
        {
            margin: 0px;
            background-color: #f3f3f3;
            border: solid 1px #a1a1a1; 
            min-width:890px;
            width:920px;
            height:50px;
        }
        .mainContentHolder h3
        {
            font-size:13px;
            font-style: normal;
            font-variant: normal;
            font-weight: normal;
            line-height: 20px;
            margin-right: 1%;
        }
        .mainContentHolder label
        {
            font-size: 11px;
            font-style: normal;
            font-variant: normal;
            font-weight: normal;
            line-height: 20px;
            margin-bottom: 10px;
            margin-right: 1%;
        }
        .mainContentHolder input
        {
            width:70px;
        }
        .ui-dialog
        {
            font-size:12px;
        }
        .ui-widget-header
        {
            background: #8D122B;
        }
        .ui-datepicker
        {
            font-size:12px;
        }
        #quickNoteHeader
        {
           color: Green; 
        }

EDIT - Turns out the layout works fine in IE 10, just not in IE9

Answer №1

make sure to correct your doctype declaration

<!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>
  </head>

also, remember to set the display block and width to 100% for the span element

<span style="display:block;width:100%;">
        <label class="inlineLbl">Description</label>
        <input type="text" style="width:82%;" id="txtDescription" runat="server" />
        <asp:RequiredFieldValidator class="validation" ErrorMessage="*" Display="Dynamic" ControlToValidate="txtDescription" ToolTip="Description is required" runat="server" />
        <input type="button" ID="saveNote" style="width:75px;" Value="Save Note" runat="server" onclick="saveNewQuickNote()" />
    </span>

Answer №2

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<head>
    <html xmlns="http://www.w3.org/1999/xhtml">
</head>

This code snippet is missing the closing </html> tag and therefore is not valid HTML.

A correct version would look like this:

<!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>
  </head>
</html>

Answer №3

Hey John, I successfully integrated this code into my personal site and it's functioning properly.

It seems like there might be some conflicting CSS styles causing an issue.

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