CSS - Firefox Absolute Positioning Of Div 3 Pixels Higher Than Other Browsers

I am desperate. I think I found a bug in Firefox, and I'm not sure how to work around it.

The following code works in everything (IE 8, Chrome, Safari, Opera) except Firefox (version 3.6.3). Am I doing something wrong, or is this a bug in Firefox?

You can look what happens to the drop-down menu's on Menu 2 and 3 live by going to my site (deenfoxx dot com slash firefox-bug dot html).

css Code:
Original - css Code #main-nav { background-color: black; height: 40px; } #nav { position: relative; margin: 0; padding: 0; } #nav li { position: relative; float: left; display: table; width: 99px; height: 40px; border-right: 1px solid white; text-align: center; font-size: 10px; } #nav li:hover { background-color: darkred; } #nav a { display: table-cell; vertical-align: middle; line-height: 11px; font-weight: bold; text-decoration: none; color: #fff; } #nav li ul { position: absolute; padding: 0; background-color: gray; top: 40px; left: 0px; } #nav li ul li { width: 98px; border: 0; border-top: 1px solid white; }

  

 #main-nav


 {


     background-color: black;


     height: 40px;


 }


 #nav


 {


     position: relative;


     margin: 0;


     padding: 0;


 }


 #nav li


 {


     position: relative;


     float: left;


     display: table;


     width: 99px;


     height: 40px;


     border-right: 1px solid white;


     text-align: center;


     font-size: 10px;


 }


 #nav li:hover


 {


     background-color: darkred;


 }


 #nav a


 {


     display: table-cell;


     vertical-align: middle;


     line-height: 11px;


     font-weight: bold;


     text-decoration: none;


     color: #fff;


 }


 #nav li ul


 {


     position: absolute;


     padding: 0;


     background-color: gray;


     top: 40px;


     left: 0px;


 }


 #nav li ul li


 {


     width: 98px;


     border: 0;


     border-top: 1px solid white;


 } 

html4strict Code:
Original - html4strict Code <div id="main-nav"> <ul id="nav"> <li id="m1"><a href="#1">Main Menu 1</a></li> <li> <a href="#2">Main Menu 2</a> <ul> <li><a href="#2a">Sub-Category 1</a></li> <li><a href="#2b">Sub-Category<br/>with multiple lines</a></li> </ul> </li> <li> <a href="#3">Main Menu 3 with multiple lines</a> <ul> <li><a href="#3a">Sub-Category 2</a></li> </ul> </li> <li><a href="#4">Main Menu item which has a really long name on it</a></li> </ul> </div>

  

 <div id="main-nav">


     <ul id="nav">


         <li id="m1"><a href="#1">Main Menu 1</a></li>


         <li>


             <a href="#2">Main Menu 2</a>


             <ul>


                 <li><a href="#2a">Sub-Category 1</a></li>


                 <li><a href="#2b">Sub-Category<br/>with multiple lines</a></li>


             </ul>


         </li>


         <li>


             <a href="#3">Main Menu 3 with multiple lines</a>


             <ul>


                 <li><a href="#3a">Sub-Category 2</a></li>


             </ul>


         </li>


         <li><a href="#4">Main Menu item which has a really long name on it</a></li>


     </ul>


 </div> 

The problem appears to be that "#nav li" happens to have position:relative; and a display:table; and "#nav li ul" is position:absolute;. Normally, absolute positioning requires its parent or ancestor position to be set, but when used with the table display, it doesn't work normally on Firefox--but it does on other browsers.

Can someone help me with a workaround that does not involve altering the HTML? If I must, I will accept a workaround that requires changing the HTML, but I'll have to do some heavy duty recoding of Magento's core menu generation. Anyone that knows Magento knows I want to avoid that like the plague--my example is a very simplified version of the problem.

Please look at http://www.rodstrans.com/diagnosis/body_leaks.html In IE & Chrome the checkboxes are positioned absolute in each table cell, but in Firefox they all bunch at the top left. I have put a position:relative on all parent elements and can not figure out what is happening.

Join Date: May 2008
Posts: 2

Firefox bug combining absolute and fixed positioning
Hey helpful people.

I am designing a site which has a floating toolbar (position: fixed) with popup menus. The popup menus are using nested lists and position: absolute to display.
JavaScript is dealing with the transition.

The problem is that in firefox alone the fixed toolbar jumps when the popup menus show and hide. Removing either position: fixed or the offset (bottom: 27px) removes this problem. However these need to be present in the design.

Anyone know a workaround? (webpage and css below)

Code:

<div class="toolbar_O">
  <div class="toolbar_I">
    <!-- top page info -->
    <div class="pageInformation cf">
      <!-- Page Status Info Start -->
      <div class="pageStatus">
        <h4 class="statusLabel">Status: </h4>
        <span class="status">Live</span> </div>
      <!-- Page Status Info End -->
      <div class="RHS cf">
        <div class="toolbarMenu">
          <ul>
            <li class="publicationDates"><a href="#" title="Publication dates">Publication dates<span class="moreArrow"><span class="wai">^</span></span>
              <!--[if gte IE 7]><!--></a><!--<![endif]-->
              <ul class="popup">
                <li>
                  <form>
                    <p>
                      <label for="email" class="expiryDate">Set expiry date</label>
                    </p>
                    <input type="text" class="inputTextbox" name="expiryDate" id="expiryDate"/>
                    <p>
                      <label for="email" class="liveDate">Set live date</label>
                    </p>
                    <input type="text" class="inputTextbox" name="liveDate" id="liveDate"/>
                  </form>
                </li>
              </ul>
            </li>
            <li class="dateAction"><a href="#" title="Last published">Last published 29/01/08<span class="moreArrow"><span class="wai">^</span></span>
              <!--[if gte IE 7]><!--></a><!--<![endif]-->
              <ul class="popup">
                <li>
                  <p class="cf"><span class="label">Author:</span><span class="value">Anne Light</span></p>
                  <p class="cf"><span class="label">Approver:</span><span class="value">John Smith</span></p>
                  <p class="cf"><span class="label">Review date:</span><span class="value">21/06/07</span></p>
                </li>
              </ul>
            </li>
            <li class="versions"><a href="#" title="Other versions">Other versions (#)<span class="moreArrow"><span class="wai">^</span></span>
              <!--[if gte IE 7]><!--></a><!--<![endif]-->
             <ul class="popup">
                <li>
                  <p>Ann Light's version sent for approval on 24/12/07 at 10.03am</p>
                </li>
              </ul>
            </li>
          </ul>
        </div>
      </div>
    </div>
    <!-- bottom user functions -->
    <div class="userFunctions cf">
      <!--Left Hand Side Buttons Start -->
      <div class="btnLHS"> <a id="#" class="btnHelp" title="Help" href="#">Help</a>
        <div class="toolbarMenu pageActions">
          <ul>
            <li class="otherPageActions"><a href="#" title="Other page actions">Other page actions<span class="moreArrow"><span class="wai">^</span></span>
              <!--[if gte IE 7]><!--></a><!--<![endif]-->
              <ul class="popup">
                <li>
                  <ol>
                    <li><a href="pa001a_delete_page.html" class="lbOn modal:{width:450}" title="Delete page">Delete this page</a></li>
                    <li><a href="pa002_set_date.html" class="lbOn" title="Set date">Set publication/expiry date</a></li>
                    <li><a href="pa003_page_permissions.html" class="lbOn modal:{width:450}" title="See page permissions">See page permissions</a></li>
                    <li><a href="pa004_add_subpage.html" class="lbOn" title="Create sub page">Create sub page</a></li>
                    <li><a href="pa005_page_history.html" class="lbOn modal:{width:450}" title="See page history">See page history</a></li>
                    <li><a href="#">Preview</a></li>
                    <li><a href="link_1d.html" class="lbOn modal:{width:450}" title="Save a copy">Save a copy</a></li>
                  </ol>
                </li>
              </ul>
            </li>
          </ul>
        </div>
      </div>
      <!-- Left Hand Side Buttons End -->
      <!-- Right Hand Side Buttons Start -->
      <div class="btnRHS"><a href="st016_page_notes.html" class="lbOn pageNotes" title="page notes">See page notes</a> <a id="#" class="btnReject" title="Do Not Approve" href="#"><span class="buttonText">Don't Approve</span></a> <a id="#" class="btnApprove" title="Approve" href="#"><span class="buttonText">Approve</span></a> </div>
      <!-- Right Hand Side Buttons End -->
    </div>
  </div>
</div>

Code:

div.toolbar_O { 
	background: #eaf1f9 url(../images/interface/toolbar_bg.gif) 0 0 repeat-x;
	border: 1px solid #3a8ea8;
	padding: 9px 0px;
	width: 729px;
	color: #0a3b3f;
	font-size: 0.9em;
	position: fixed;
	bottom: 20px;
	left: 100px;
	height: 82px;
	}
body.editMode div.toolbar_O {
	position: relative;
	left:0;
	bottom: 0;
	float:right;
}	
	
.toolbar_O .toolbar_I {
	border: 1px solid #073f58;
	background: url(../images/interface/toolbarinner_bg.gif) #54b4cc;
	margin: 0px 9px;
}


.toolbarMenu ul li a, 
.toolbarMenu ul li a:visited {
	font-weight: bold;
	color: #77aeb5;
	border: 1px solid #287e95;
	text-decoration: none;
	padding: 4px 5px 6px 5px;
	background: #e6f4f5;
	color: #0a3b3f !important;
	display: -moz-inline-box;
	display: inline-block;
	height: 13px;
}

.toolbarMenu ul {
	padding:0;
	margin:0;
	list-style-type: none;
	margin: 0;
}

.toolbarMenu ul li {
	float:left;
	position:relative;
	margin: 0 0 0 10px;
}
.toolbarMenu ul li ul li {
	margin: 0;
	font-size: 0.9em;
}
.toolbarMenu ul li ul {
	visibility: hidden;
	position:absolute;
	bottom: 27px;
	left:0;
	padding: 5px;
	background: #ebf6f8; 
	border: 1px solid #2e869c;
	margin: 0;
	z-index: 1000;
	font-size: 1em;
	text-align: left;
}

.toolbarMenu ul .moreArrow {
	display: -moz-inline-box;
	display: inline-block;
	padding: 6px 8px;
	width: 1px;
	margin-left: 10px;
	border-left: 1px solid #89abb7;
	background: url(../images/interface/morearrow.gif) 3px 0 no-repeat
}
.toolbarMenu ul li.open ul {
	visibility: visible;
	
}

.toolbarMenu ul li.versions.open ul {
	width: 250px;
}

div.toolbar_O .toolbarMenu ul li.open a {
	color: #4594A5 !important;
}
div.toolbar_O .toolbarMenu ul li.open .moreArrow{
	background: url(../images/interface/closearrow.gif) 3px 0 no-repeat;
}
/* top part of toolbar */
.toolbar_O .pageInformation {
	padding: 6px;
	height: 25px;
}
 
.toolbar_O .pageInformation .pageStatus {
	color: #FFF;
	font-size: 1.3em;
	width: 170px;
	float: left;
}
.toolbar_O .pageInformation .RHS {
	float: right;
}
h4.statusLabel {
	height: 100%;
	display: inline;
	text-transform: uppercase;
}
div.toolbar_O div.pageInformation .label, 
div.toolbar	_O div.userFunctions .label {
	width: 75px;
	float: left;
	text-align: left;
}
div.toolbar_O div.pageInformation .value, 
div.toolbar	_O div.userFunctions .value {
	font-weight: bold;
	text-align: left;
	float: right;
	vertical-align: top;
	width: 75px;
}
div.toolbar_O div.pageInformation .inputTextbox {
	width: 80%;
}

/* bootom part of toolbar */
.toolbar_O .userFunctions {
	padding: 8px 0;
	height: 25px;
}
div.toolbar_O div.userFunctions div.btnRHS {
	float: right;
	margin: 0px 10px 0px 0px;
}
div.toolbar_O div.userFunctions .btnLHS {
	float: left;
	margin: 0px 0px 0px 10px;
}
div.toolbar_O div.userFunctions div.btnLHS a.btnHelp, 
div.toolbar_O div.userFunctions div.btnLHS a.btnHelp:hover {
	padding: 5px 5px 5px 25px;
	margin: 1px 5px 0 0;
	background: #e6f4f5 url(../images/interface/icon_help.gif) 3px 3px no-repeat !important;
	float: left;
	border: 1px solid #287e95;
	text-decoration: none;
	font-weight: bold;
	color: #0a3b3f;
	height: 12px
	
}
.toolbarMenu.pageActions {
	float: left;
}
.toolbarMenu ol {
	margin: 0;
	padding: 0;
	width: 320px;
	height: 60px;
	list-style: none;
}
.toolbarMenu ol li,
.toolbarMenu ol li a {
	margin: 0;
	padding: 0;
	float: left;
	width: 150px;
	min-height: 8px;
	display: inline-block;
	border: none !important;
	color: #0a3b3f !important;
	font-size: 1.2em;
	background: none;
	}
div.toolbar_O div.toolbar_I a.pageNotes {
	font-weight: bold;
	color: #0a3b3f;
}
div.toolbar_O div.toolbar_I a.pageNotes:hover {
	color: #FFF;
}

/* approve/reject btns */
div.toolbar_O div.userFunctions div.btnRHS a.btnApprove,  
div.toolbar_O div.userFunctions div.btnRHS a.btnReject {
	border: 1px solid #287e95;
	border-bottom: 2px solid #06465f;
	border-right: 2px solid #06465f;
	text-decoration: none;
	height: 12px;
	padding: 5px 15px 5px 0;
	background: #fffeff url(../images/interface/icon_approve.gif) 95% 3px no-repeat;
	display: -moz-inline-box;
	display: inline-block;
	color: #0a3b3f;
}
div.toolbar_O div.userFunctions div.btnRHS a.btnApprove:hover,  
div.toolbar_O div.userFunctions div.btnRHS a.btnReject:hover {
	background-color: #135d82;
	border: 1px solid #FFF;
	border-bottom: 2px solid #06465f;
	border-right: 2px solid #06465f;
	color: #FFF;
}
div.toolbar_O div.userFunctions div.btnRHS a.btnReject {
	background: #fffeff url(../images/interface/icon_reject.gif) 95% 3px no-repeat;
}



li.otherPageActions ul,
li.otherPageActions ul li{
	margin: 0;
	padding: 0;
	list-style: none;
}

Is there a size difference between css pixels and html width pixels? The question I ask is because I am using the embed code from flickr and vimeo`s width of 220 and the search input bar in css is set to 220px, but when viewed through a browser they have different lengths. Is there a solution for making it the same length?

Hi everyone,

I just stated handcoding and I am having a great time. Everything seemed to be going well on my first site until I previewed it on IE. After solving the nasty png issue, I realized that the two elements that I have absolute postioned a) screw the layout up in IE6 b) don't appear all together in IE7 and IE8, but doesn't screw up the flow.

The elements are an arm that is supposed to hang off the left side, and hair that sits above the contentwrap (you will understand once you look)

It renders perfectly in Firefox, safari and google chrome. Go figure.

I read I can't put hyperlinks because of spam, so if you don't mind helping out, please visit:

w w w . goscoblog. com/test/index.html

Thanks In advance