The `[]` syntax is an [attribute selector](http://www.w3.org/TR/CSS2/selector.html#attribute-selectors).

    a[class=&quot;btn&quot;]

This will select any `&lt;a&gt;` tag with `class=&quot;btn&quot;`. However, it will *not* select `&lt;a&gt;` which has `class=&quot;btn btn_red&quot;`, for example (whereas [`a.btn`](http://www.w3.org/TR/CSS2/selector.html#class-html) would). It only *exactly matches* that attribute.

You may want to read [The 30 CSS Selectors you Must Memorize](http://net.tutsplus.com/tutorials/html-css-techniques/the-30-css-selectors-you-must-memorize/). It&#39;s invaluable to any up-and-coming web developer.

&gt; Why use an attribute selector to match classes?

**The obvious use case for attribute selector: Specific matches**

Exact match `=`, containing/substring `*=`, prefix `^=`, suffix `$=`, [etc](https://developer.mozilla.org/en-US/docs/Web/CSS/Attribute_selectors).

**Yahoo Mail Hack**

 - You want to support beta versions of Yahoo Mail
 - You have media queries

Normally apps made before media queries just ignore the whole block - not beta yahoo mail, which just applies all the styles ignoring the media query. It doesn&#39;t support attribute selectors though...

For this case you can use attribute selectors to select a class within a media query so that the media query works on most email clients but doesn&#39;t trigger media query styles on beta versions of yahoo mail.



[read more here](https://www.emailonacid.com/blog/article/email-development/stop_yahoo_mail_from_rendering_your_media_queries/)

Caniemail data on the [attribute-selector](https://www.caniemail.com/features/css-selector-attribute/) having much less support than the [class selector](https://www.caniemail.com/features/css-selector-class/).

Can anyone give me an example that uses `onResume()` in Android?

Also, if I want to restart the activity at the end of the execution of another, which method is executed—`onCreate()` or `onResume()`?

And if I want to update data, how do I put it in `onResume()?`

How to use onResume()?

Just started to use [browserify][1], but I cannot find documentation for how to get it spilling out minified output.

So I am looking something like:

    $&gt; browserify main.js &gt; bundle.js --minified


  [1]: https://github.com/substack/node-browserify

How to get minified output with browserify?

I have found [an example][1] of responsive email templates where there are such CSS selectors such as the following:

    a[class=&quot;btn&quot;]

Why is this syntax used if it could be replaced with the simpler:

    a.btn

Does it have any impact on mobile browsers or anything else? Are there email clients that require this usage?

  [1]: http://www.zurb.com/playground/responsive-email-templates

Why use an attribute selector to match classes?

I have found <a href="http://www.zurb.com/playground/responsive-email-templates" target="_blank" rel="noopener noreferrer">an example</a> of responsive email templates where there are such CSS selectors such as the following:
<pre><code class="hljs language-css">a[class="btn"]
</code></pre>
Why is this syntax used if it could be replaced with the simpler:
<pre><code class="hljs language-css">a.btn
</code></pre>
Does it have any impact on mobile browsers or anything else? Are there email clients that require this usage?

Recently I came across `* *` in [CSS][1].

Site reference - [Site Link][2].

For a single `*` usage in CSS style sheet, Internet and Stack Overflow is flooded with examples, but I am not sure about using two `* *` symbol in CSS.

I googled it, but unable to find any relevant information about this, as a single `*` selects all elements, but I am not sure why the site used it twice. What is the missing part for this, and why is this hack used (if it is a hack)?

  [1]: http://en.wikipedia.org/wiki/Cascading_Style_Sheets
  [2]: http://semlabs.co.uk/journal/how-to-stop-your-wordpress-blog-getting-hacked


What does the * * CSS selector do?

Any ideas on how to get a div&#39;s height without using jQuery?

I was searching Stack Overflow for this question and it seems like every answer is pointing to jQuery&#39;s `.height()`.

I tried something like `myDiv.style.height`, but it returned nothing, even when my div had its `width` and `height` set in CSS.

Get div height with plain JavaScript

How can I adapt the CSS selector below:

    .myTableRow td:nth-child(?){
      background-color: #FFFFCC;
    }

so it applies to `td` columns `2`~`4`?
    
    &lt;table&gt;
      &lt;tr class=&quot;myTableRow&quot;&gt;
        &lt;td&gt;column 1&lt;/td&gt;
        &lt;td&gt;column 2&lt;/td&gt;
        &lt;td&gt;column 3&lt;/td&gt;
        &lt;td&gt;column 4&lt;/td&gt;
        &lt;td&gt;column 5&lt;/td&gt;
      &lt;/tr&gt;
    &lt;/table&gt;


CSS Selector for nth range?

I&#39;ve created a site using the **Zurb Foundation 3** grid. Each page has a large `h1`:

&lt;!-- begin snippet: js hide: false console: true babel: false --&gt;

&lt;!-- language: lang-css --&gt;

    body {
      font-size: 100%
    }

    /* Headers */

    h1 {
      font-size: 6.2em;
      font-weight: 500;
    }

&lt;!-- language: lang-html --&gt;

    &lt;div class=&quot;row&quot;&gt;
      &lt;div class=&quot;twelve columns text-center&quot;&gt;
        &lt;h1&gt; LARGE HEADER TAGLINE &lt;/h1&gt;
      &lt;/div&gt;
      &lt;!-- End Tagline --&gt;
    &lt;/div&gt;
    &lt;!-- End Row --&gt;

&lt;!-- end snippet --&gt;

When I resize the browser to mobile size the large font doesn&#39;t adjust and causes the browser to include a horizontal scroll to accommodate for the large text.

I&#39;ve noticed that on the **Zurb Foundation 3** Typography [example page][1], the headers adapt to the browser as it is compressed and expanded. 

Am I missing something really obvious? How do I achieve this?


  [1]: http://foundation.zurb.com/sites/docs/v/3.2.5/typography.php

Responsive font size in CSS

I have an html table with `table-layout: fixed` and a td with a set width.  The column still expands to hold the contents of text that doesn&#39;t contain a space.  Is there a way to fix this other than wrapping the contents of each td in a div?

Example: http://jsfiddle.net/6p9K3/29/

	&lt;table&gt;
		&lt;tbody&gt;
			&lt;tr&gt;
				&lt;td style=&quot;width: 50px;&quot;&gt;Test&lt;/td&gt;
				&lt;td&gt;Testing 1123455&lt;/td&gt;
			&lt;/tr&gt;&lt;tr&gt;
				&lt;td style=&quot;width: 50px;&quot;&gt;AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA&lt;/td&gt;
				&lt;td&gt;B&lt;/td&gt;
			&lt;/tr&gt;
		&lt;/tbody&gt;
	&lt;/table&gt;

	table
	{
		table-layout: fixed;
	}

	td
	{
		border: 1px solid green;
		overflow: hidden;
	}

In the example, you can see that the column with AAAAAAAAAAAA... expands despite being explicitly set to 50px wide.

Force table column widths to always be fixed regardless of contents

If I have a `table` with two columns, how do I specify a `padding` or any other css so that it is applied just for the first column of `&lt;td&gt;`s. Also how do I style an ***n-th*** column similarly?

Style the first &lt;td&gt; column of a table differently

I can&#39;t seem to find much information about this.

[Smashing Magazine](http://coding.smashingmagazine.com/2011/03/30/how-to-use-css3-pseudo-classes/) seems to be saying that `html` and `:root` are the same thing but surely there must be a tiny difference?

What&#39;s the difference between CSS3&#39;s :root pseudo class and html?

I&#39;ve written this code, but it does not work. What is my problem?

    .class {
        margin:20px;
        :hover {
            color:yellow;
        }
     }

Content Type	Original Author	Original Content on Stackoverflow
Question	ducin	View Question on Stackoverflow
Solution 1 - Css	Cat	View Answer on Stackoverflow
Solution 2 - Css	Zach Jensz	View Answer on Stackoverflow

Why use an attribute selector to match classes?

Css Problem Overview

Css Solutions

Solution 1 - Css

Solution 2 - Css

How to get minified output with browserify?

How to use onResume()?

Attributions