Markup Validation Service
Check the markup (HTML, XHTML, …) of Web documents
Markup Validation Service
Check the markup (HTML, XHTML, …) of Web documents
The following notes and warnings highlight missing or conflicting information which caused the validator to perform some guesswork prior to validation, or other things affecting the output below. If the guess or fallback is incorrect, it could make validation results entirely incoherent. It is highly recommended to check these potential issues, and, if necessary, fix them and re-validate the document.
Mismatch between Public and System identifiers in the DOCTYPE declaration
This document uses an inconsistent DOCTYPE declaration.
The Public Identifier
-//W3C//DTD XHTML 1.0 Transitional//EN declares the
XHTML 1.0 Transitional document type, but the associated System Identifier
https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd does not match this document type.
The recommended System Identifier
for XHTML 1.0 Transitional is http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd.
The safest way to use a correct DOCTYPE declaration is to copy and paste one from the recommended list and avoid editing that part of your markup by hand.
Line 3,
Column 43:
value of fixed attribute "xmlns" not equal to default
<html xmlns="https://www.w3.org/1999/xhtml"><html xmlns="https://www.w3.org/1999/xhtml"> // ]]></script> <script data-ad-client="ca-pub-0176593370400597" async src="https://pagead2.go…You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.
Line 191,
Column 57:
"async" is not a member of a group specified for any attribute
…lient="ca-pub-0176593370400597" async src="https://pagead2.googlesyndication.c…… src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>The attribute given above is required for an element that you've used, but you have omitted it. For instance, in most HTML and XHTML document types the "type" attribute is required on the "script" element and the "alt" attribute is required for the "img" element.
Typical values for type are
type="text/css" for <style>
and type="text/javascript" for <script>.
Line 215,
Column 25:
document type does not allow element "h1" here; missing one of "object", "applet", "map", "iframe", "button", "ins", "del" start-tag
<p class="grey"><h1>Forum und Community </h1></p>The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "<p>" or "<table>") inside an inline element (such as "<a>", "<span>", or "<font>").
Line 225,
Column 121:
there is no attribute "marginheight"
…" width="50%" border="0" marginheight="0" marginwidth="0" frameborder="0" alt=…You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.
Line 225,
Column 137:
there is no attribute "marginwidth"
…rder="0" marginheight="0" marginwidth="0" frameborder="0" alt="Chevrolet Malib…You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.
Line 225,
Column 153:
there is no attribute "frameborder"
…eight="0" marginwidth="0" frameborder="0" alt="Chevrolet Malibu Boston" /><br …You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.
Line 225,
Column 207:
an attribute value must be a literal unless it contains only name characters
…et Malibu Boston" /><br /><font color=#75879B>____________________</font><img …You have used a character that is not considered a "name character" in an attribute value. Which characters are considered "name characters" varies between the different document types, but a good rule of thumb is that unless the value contains only lower or upper case letters in the range a-z you must put quotation marks around the value. In fact, unless you have extreme file size requirements it is a very very good idea to always put quote marks around your attribute values. It is never wrong to do so, and very often it is absolutely necessary.
Line 243,
Column 52:
duplicate specification of attribute "class"
… <label class="grey" for="cookielength" class="field">Sitzungslänge:</label>
You have specified an attribute more than once. Example: Using
the "height" attribute twice on the same
"img" tag.
Line 307,
Column 126:
character "&" is the first character of a delimiter but occurred as data
…a-forum.de/images/neu.jpg" alt="Chevrolet Epica, Malibu & Captiva Forum" /></a>This message may appear in several cases:
Line 313,
Column 53:
ID "siteslogan" already defined
…teslogan" class="floatright"><div id="siteslogan" class="smalltext"><a href="/…An "id" is a unique identifier. Each time this attribute is used in a document it must have a different value. If you are using this attribute as a hook for style sheets it may be more appropriate to use classes (which group elements) than id (which are used to identify exactly one element).
Line 313,
Column 13:
ID "siteslogan" first defined here
<div id="siteslogan" class="floatright"><div id="siteslogan" class="smalltex……lt=""ns"" border="0" onload="NcodeImageResizer.createOn(this);" clas…You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.
Line 902,
Column 100:
an attribute value specification must be an attribute value literal unless SHORTTAG YES is specified
…hp?board=34.0" name="b34"><font color=red> Allgemein </font></a><span class="s……hp?board=35.0" name="b35"><font color=red> Motor/Getriebe/Abgasanlage </font><……um.de/index.php?board=43.0" name="b43"><font color=red> LPG/Autogas </font></a>…a-forum.de/index.php?board=36.0" name="b36"><font color=red> Diesel </font></a>…hp?board=37.0" name="b37"><font color=red> Zubehör, Ersatzteile, Inspektionen ……php?board=39.0" name="b39"><font color=red> Tuning/Styling/Umbauten </font></a>…dex.php?board=38.0" name="b38"><font color=red> Elektrik/Elektronik </font></a>…ex.php?board=41.0" name="b41"><font color=red> Pflege & Wartung </font></a>…hp?board=42.0" name="b42"><font color=red> Räder & Fahrwerk </font></a><sp……hp?board=40.0" name="b40"><font color=red> Car-HiFi, Sound & Navigation </……hp?board=44.0" name="b44"><font color=red> Sonstiges </font></a><span class="s……rum.de/index.php?board=55.0" name="b55"><font color=blue> Allgemein </font></a>…hp?board=56.0" name="b56"><font color=blue> Motor/Getriebe/Abgasanlage</font><……um.de/index.php?board=57.0" name="b57"><font color=blue> LPG/Autogas</font></a>…hp?board=58.0" name="b58"><font color=blue> Diesel</font></a><span class="smal……hp?board=59.0" name="b59"><font color=blue> Zubehör, Ersatzteile, Inspektionen……php?board=60.0" name="b60"><font color=blue> Tuning/Styling/Umbauten</font></a>…dex.php?board=61.0" name="b61"><font color=blue> Elektrik/Elektronik</font></a>…ex.php?board=62.0" name="b62"><font color=blue> Pflege & Wartung</font></a>…ex.php?board=63.0" name="b63"><font color=blue> Räder & Fahrwerk</font></a>…hp?board=64.0" name="b64"><font color=blue> Car-HiFi, Sound & Navigation</……hp?board=65.0" name="b65"><font color=blue> Sonstiges</font></a><span class="s…….de/index.php?board=37.0"><font color=red> Zubehör, Ersatzteile, Inspektionen …….de/index.php?board=37.0"><font color=red> Zubehör, Ersatzteile, Inspektionen ……f="/index.php?page=pg_impressum"><span> Impressum & Datenschutz</span></a></li>This message may appear in several cases:
Line 2226,
Column 13:
required attribute "type" not specified
<script>The attribute given above is required for an element that you've used, but you have omitted it. For instance, in most HTML and XHTML document types the "type" attribute is required on the "script" element and the "alt" attribute is required for the "img" element.
Typical values for type are
type="text/css" for <style>
and type="text/javascript" for <script>.
Line 2239,
Column 13:
required attribute "type" not specified
<script>The attribute given above is required for an element that you've used, but you have omitted it. For instance, in most HTML and XHTML document types the "type" attribute is required on the "script" element and the "alt" attribute is required for the "img" element.
Typical values for type are
type="text/css" for <style>
and type="text/javascript" for <script>.
Line 2257,
Column 13:
required attribute "type" not specified
<script>The attribute given above is required for an element that you've used, but you have omitted it. For instance, in most HTML and XHTML document types the "type" attribute is required on the "script" element and the "alt" attribute is required for the "img" element.
Typical values for type are
type="text/css" for <style>
and type="text/javascript" for <script>.
Line 239,
Column 32:
reference to non-existent ID "passwrd"
<label class="grey" for="passwrd">Passwort:</label>This error can be triggered by:
Try to check the spelling and case of the id you are referring to.
Line 243,
Column 32:
reference to non-existent ID "cookielength"
<label class="grey" for="cookielength" class="field">Sitzungslänge:</labe…This error can be triggered by:
Try to check the spelling and case of the id you are referring to.
Line 235,
Column 32:
reference to non-existent ID "user"
<label class="grey" for="user">Benutzername:</label>This error can be triggered by:
Try to check the spelling and case of the id you are referring to.
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