You can use the [CSS3 Linear Gradient][1] property along with your background-image like this:

    #landing-wrapper {
        display:table;
        width:100%;
        background: linear-gradient( rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5) ), url(&#39;landingpagepic.jpg&#39;);
        background-position:center top;
        height:350px;
    }

Here&#39;s a demo:

&lt;!-- begin snippet: js hide: false --&gt;

&lt;!-- language: lang-css --&gt;

    #landing-wrapper {
      display: table;
      width: 100%;
      background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url(&#39;http://placehold.it/350x150&#39;);
      background-position: center top;
      height: 350px;
      color: white;
    }

&lt;!-- language: lang-html --&gt;

    &lt;div id=&quot;landing-wrapper&quot;&gt;Lorem ipsum dolor ismet.&lt;/div&gt;

&lt;!-- end snippet --&gt;


  [1]: http://www.w3schools.com/css/css3_gradients.asp

I have a very simple subclass of UITextView that adds the &quot;Placeholder&quot; functionality that you can find native to the Text Field object. Here is my code for the subclass:

    import UIKit
    import Foundation

    @IBDesignable class PlaceholderTextView: UITextView, UITextViewDelegate
    {
        @IBInspectable var placeholder: String = &quot;&quot; {
            didSet {
                setPlaceholderText()
            }
        }
        private let placeholderColor: UIColor = UIColor.lightGrayColor()        
        private var textColorCache: UIColor!
        
        override init(frame: CGRect) {
            super.init(frame: frame)
            self.delegate = self
        }
        
        required init(coder aDecoder: NSCoder) {
            super.init(coder: aDecoder)
            self.delegate = self
        }
        
        func textViewDidBeginEditing(textView: UITextView) {
            if textView.text == placeholder {
                textView.text = &quot;&quot;
                textView.textColor = textColorCache
            }
        }
        
        func textViewDidEndEditing(textView: UITextView) {
            if textView.text == &quot;&quot; &amp;&amp; placeholder != &quot;&quot; {
                setPlaceholderText()
            }
        }
        
        func setPlaceholderText() {
            if placeholder != &quot;&quot; {
                if textColorCache == nil { textColorCache = self.textColor }
                self.textColor = placeholderColor
                self.text = placeholder
            }
        }
    }

After changing the class for the `UITextView` object in the Identity Inspector to `PlaceholderTextView`, I can set the `Placeholder` property just fine in the Attribute Inspector. The code works great when running the app, but does not display the placeholder text in the interface builder. I also get the following non-blocking errors (I assume this is why it&#39;s not rendering at design time):

&gt; error: IB Designables: Failed to update auto layout status: Interface Builder Cocoa Touch Tool crashed
&gt;
&gt; error: IB Designables: Failed to render instance of PlaceholderTextView: Rendering the view took longer than 200 ms. Your drawing code may suffer from slow performance.

I&#39;m not able to figure out what is causing these errors. The second error doesn&#39;t make any sense, as I&#39;m not even overriding drawRect(). Any ideas?

@IBDesignable error: IB Designables: Failed to update auto layout status: Interface Builder Cocoa Touch Tool crashed

I&#39;m trying to switch an existing app from `UIWebView` to `WKWebView`. The current app manages the users login / session outside of the `webview` and sets the `cookies` required for authentication into the the `NSHTTPCookieStore`. Unfortunately new `WKWebView` doesn&#39;t use the `cookies` from the `NSHTTPCookieStorage`. Is there another way to achieve this?

Can I set the cookies to be used by a WKWebView?

Should be a fairly simple question. In my website I do this: 

    #landing-wrapper {
    	display:table;
    	width:100%;
    	background:url(&#39;landingpagepic.jpg&#39;);
    	background-position:center top;
    	height:350px;
    }

What I&#39;d like to do is make the background image darker. Since I have UI elements inside this DIV I don&#39;t think I can really place another div over it to darken it. Suggestions? 

Darken CSS background image?

Should be a fairly simple question. In my website I do this:
<pre><code class="hljs language-css">#landing-wrapper {
	display:table;
	width:100%;
	background:url('landingpagepic.jpg');
	background-position:center top;
	height:350px;
}
</code></pre>
What I'd like to do is make the background image darker. Since I have UI elements inside this DIV I don't think I can really place another div over it to darken it. Suggestions?

Edit: New title.
What I&#39;m looking for is a document.querySelector for elements inside an iframe.

I&#39;ve done quite a bit of Googling for an answer and finally I&#39;m stumped.

I&#39;m trying to query inside an iframe. I&#39;m building string selectors to be used in Selenium and usually I just inspect the element with Firebug, and use document.querySelectorAll(&quot;theStringIBuid&quot;);

But it doesn&#39;t work with elements inside iframes. I&#39;ve tried all of the below to get an element &quot;radiobutton1&quot; inside the &quot;page-iframe&quot; iframe.


    var elem1 = &quot;.page-iframe&quot;;
    console.log(elem1);
    var elem2 = &quot;.radiobutton1&quot;;
    console.log(elem2);
    document.querySelectorAll(elem1+elem2+&quot;&quot;);

    document.querySelectorAll(&#39;.page-iframe&#39;).contentWindow.document.body.querySelectorAll(&#39;.radiobutton1&#39;)
    document.getElementById(&#39;.page-iframe&#39;).contentWindow.document.body.innerHTML;

    [].forEach.call( document.querySelectorAll(&#39;.page-iframe&#39;), 
    function  fn(elem){ 
    console.log(elem.contentWindow.document.body.querySelectorAll(&#39;.radiobutton1&#39;)); });

    var contentWindow = document.getElementById(&#39;.page-iframe&#39;).contentWindow 
    var contentWindow = document.querySelectorAll(&#39;.page-iframe&#39;) 
    var contentWindow = document.querySelectorAll(&#39;.page-iframe&#39;)[0].contentWindow

Thanks-

QuerySelector for Web Elements Inside iframe

I am building a responsive page and the media queries are firing at the wrong width size. I am using Chrome.

    @media screen and (max-width: 1200px) {
	 .logo-pic {
		display: none;
	}
    }

For example, this rule works it just fires at wrong size. This rule fires at 1320px and not 1200px.
I have the meta tag for html in place. It seems to be firing the media query 100 or so pixel wider than it normall should.

    &lt;meta name=&quot;viewport&quot; content=&quot;width=device-width, initial-scale=1&quot;&gt;

I checked the previous responsive site I made and those breakpoints are firing correctly. I&#39;ve tested the browser on different websites and the media queries are fine as well. 

I found a similiar question on stack overflow but it went unanswered.

https://stackoverflow.com/questions/23133609/media-queries-breakpoint-at-wrong-value

Not sure what the problem is?


Media Queries firing at wrong width

I&#39;m looking for a fast and secure way to add and remove classes from an html element without jQuery.  
It also should be working in early IE (IE8 and up).

How to add and remove classes in Javascript without jQuery

`img` with `srcset` attribute looks like a great way of doing responsive images. Is there an equivalent syntax that works in css `background-image` property?

HTML

    &lt;img src=&quot;small.jpg&quot; srcset=&quot;medium.jpg 1000w, large.jpg 2000w&quot; alt=&quot;yah&quot;&gt;

CSS

```css
.mycontainer {
    background: url(&#39;what goes here?&#39;);
}
```


Is there a srcset equivalent for css background image

So I am new to web development and I am trying to link font awesome icons to my social profiles but am unsure of how to do that. I tried using an a href tag but it made all of the icons take me to one site instead of the one I wanted. Here is the code:

     &lt;i class=&quot;fa fa-dribbble fa-4x&quot;&gt;&lt;/i&gt;
     &lt;i class=&quot;fa fa-behance-square fa-4x&quot;&gt;&lt;/i&gt;
     &lt;i class=&quot;fa fa-linkedin-square fa-4x&quot;&gt;&lt;/i&gt;
     &lt;i class=&quot;fa fa-twitter-square fa-4x&quot;&gt;&lt;/i&gt;
     &lt;i class=&quot;fa fa-facebook-square fa-4x&quot;&gt;&lt;/i&gt;

I&#39;d like for each of these icons to go to their respective profiles. Any suggestions?



Want to make Font Awesome icons clickable

	

I need to disable the mouse hover on a particular button(not on all buttons) in the entire DOM. Please let me know how to achieve it using a CSS class.

i am using the below CSS class when my button is disabled. now i want to remove the hover effect using the same class.

    .buttonDisabled
     {
     Cursor:text !important; Text-Decoration: None !important; 
     } 

The above class will take care of removing the hand sign and text underline on mouse over . Now i want to remove hover effect also. Please let me know.


CSS disable hover effect

It&#39;s possible to style a text input&#39;s placeholder with the following:

&lt;!-- language: lang-css --&gt;

    -webkit-input-placeholder {
        color: red;
    }

I am looking at a website online and I would like to use the same placeholder color as they do. Is it possible to figure out what color they used? I would like to include any alpha values, so I can&#39;t just sample the color with an image editor.

When I inspect the element with Chrome Dev Tools, I see:

![enter image description here][1]

Dev tools does not provide information regarding the placeholder element when inspecting the input element. Is there another way?

  [1]: http://i.stack.imgur.com/qaWat.png

Inspect webkit-input-placeholder with developer tools

I am using Font Awesome and do not wish to add CSS with HTTP. I downloaded Font Awesome and included it in my code, yet Font Awesome is showing a bordered square box instead of an icon. Here is my code: 

	&lt;html&gt;
	&lt;head&gt;
	&lt;link rel=&quot;stylesheet&quot; href=&quot;../css/font-awesome.css&quot;&gt;
		&lt;link rel=&quot;stylesheet&quot; href=&quot;../css/font-awesome.min.css&quot;&gt;
	&lt;/head&gt;
	&lt;body&gt;
	&lt;div style=&quot;font-size: 44px;&quot;&gt;
	   &lt;i class=&quot;fa fa-camera-retro fa-lg&quot;&gt;&lt;/i&gt; fa-lg
	&lt;i class=&quot;fa fa-camera-retro fa-2x&quot;&gt;&lt;/i&gt; fa-2x
	&lt;/div&gt;
	&lt;/body&gt;
	&lt;/html&gt;


I would like to know how to make the icon display instead of the bordered square box.



Content Type	Original Author	Original Content on Stackoverflow
Question	Tom Maxwell	View Question on Stackoverflow
Solution 1 - Html	Fahad Hasan	View Answer on Stackoverflow

Darken CSS background image?

Html Problem Overview

Html Solutions

Solution 1 - Html

Can I set the cookies to be used by a WKWebView?

@IBDesignable error: IB Designables: Failed to update auto layout status: Interface Builder Cocoa Touch Tool crashed

Attributions