many options: see installation of w3c validation service: http://validator.w3.org/docs/install.html Firefox addons: Firefox addon or other tool to locally validate HTML pages https://addons.mozilla.org/en-US/firefox/addon/249/ Offline validator: http://htmlhelp.com/tools/validator/offline/index.html.en
Does anyone know why this happens? Because Google designed it to use tag soup instead of HTML How to make this compliant? The documentation has alternative markup that is valid under the draft HTML 5 specification: <div class=”g-plusone” data-size=”standard” data-count=”true”></div> If you want it to work with HTML 4.x or XHTML 1.x then you might … Read more
Only inline elements may be contained within inline elements. span is an inline element. So, tags like a, img, sup, etc. can go within a span, but block level elements like div and p cannot. UPDATE In reality, different elements which default to inline display behave differently. Some “inline” elements may allow block elements (a … Read more
Link is allowed in BODY. I had same problem validating link tag in HTML5 and I solved it with this <link rel=”stylesheet” property=”stylesheet” href=”https://stackoverflow.com/questions/6236097/css/homepage.css”> Need to have both property and rel tag UPDATE 2016 (thanks to yuyokk below): There was a change to HTML5 spec recently that allows having links in the body
As they state themselves “The frameborder attribute is not supported in HTML5. Use CSS instead.” The equivalent of frameborder in css is border: 0px;. Add it to your iframe in css.
Here is a good article from the MDC which explains the problems (and solutions) to form autocompletion. Microsoft has published something similar here, as well. To be honest, if this is something important to your users, ‘breaking’ standards in this way seems appropriate. For example, Amazon uses the ‘autocomplete’ attribute quite a bit, and it … Read more
Either: Add a heading (h1, …, h6) tag to your section element. Replace your section element with a div element. Ignore the warning. The message you’re seeing is a non-normative usage recommendation, as per the HTML5 spec (highlighting mine): The theme of each section should be identified, typically by including a heading (h1–h6 element) as … Read more
Only if you define thead and tfoot. It is mostly used when the table has multiple bodies of content. If the data in the table is easily understood to be the tbody then you can safely omit it.
The only valid child of either a ul or ol is an li element; an li can, however, contain a ul (or ol). To achieve your aim: <ul> <li>myItem 1</li> <li>myItem 2</li> <li style=”list-style-type:none”> <ul> <li>myItem 2a</li> </ul> </li> <li>myItem 3</li> <li>myItem 4</li> </ul>
That’s because you are nesting a block level element inside the p tag which is invalid. You can only nest inline elements such as span, a and img inside p tag. So your markup is invalid, consider making something like <div class=”inr_content clearfix”> <div class=”col2 first fl”> <p>to provide a drive-in services.</p> </div> <div class=”col2 … Read more