Using media queries to control image downloads stack overflow. The first way to use media queries is to have the alternate section of css right inside your single stylesheet. Thus, it will not apply to every media query in a commaseparated list of media queries. Media queries, added in css3, let the presentation of content be tailored to a specific range of output devices without having to change the content itself. Css media queries are an excellent way to deliver different styles to different devices, providing the best experience for each type of user. Responsive media queries for mobile devices with css examples.
To learn more about responsive web design how to target different devices and screens, using media query breakpoints, read our responsive web design tutorial. Mar 12, 2020 a css media query combines a media type and a condition that shows how web content will appear on a particular device. If your css is built mobilefirst in particular if using a framework such as bootstrap or foundation chances are also high youre loading more css than the current viewport actually needs. Please see the below media queries for standard resolutions. While media queries certainly work theyre not the best option for detecting mobile devices. Pures grid system is also mobilefirst and responsive, and youre able to customize the grid by specifying css media query breakpoints and grid classnames.
May 11, 2011 while media queries certainly work theyre not the best option for detecting mobile devices. Why browsers download stylesheets with nonmatching media queries. Contribute to retyui groupcssmediaqueriesloader development by creating an account on github. I am having problem with css media query in firefox. You can parse a media query expression and get an ast back by using the parse method. In css3, web developersdesigners can define a media type such as screen or print, and specify the look of the content by setting conditions such as width, height, or orientation. If you place all css in one file including media queries, the device will download all assets regardless of the devices dimensions, so while you might use display. Continue on below to see the css media queries for different devices, or see the live action through demo. Since media query is a logical expression it can be resolve to either true or false. Because of this, ive ended up with a somewhat large list of css media queries for typical devices over the past year or two. It is an extension of media dependent stylesheets used in different media types i. For mobile devices, this could mean you save money on that expensive data plan by not having to download the large image files. By default the plugin will emit the extracted css files to your root folder.
The script then monitors browser width changes to append and remove the styles that match the media query in the css. Nov 09, 2014 create css file by using your code editor and add some media queries for screen resolutions like mobile portrait and landscape or tab. It works correct in chrome like i made two divs and want a scrollbar. How to use media queries with jquery learning jquery. A css media query combines a media type and a condition that shows how web content will appear on a particular device. This page contains 10 link elements that reference css files meant for testing. Feb 20, 2019 this page lists a ton of different devices and media queries that would specifically target that device.
Css media query is a w3c recommendation and a css3 module which is used to adapt to conditions such as screen resolution e. Create css file by using your code editor and add some media queries for screen resolutions like mobile portrait and landscape or tab. Understanding the css3 media queries tutorial republic. I later tested what happens if a background image is assigned in the global styles, ie without a media query, and is subsequently overridden in the appropriate media query. So inside our new media query rule lets once again target the body 7. Css styles are the rules that will be applied to a web element if the mediarule evaluates to true. Bootstrap primarily uses the following media query ranges or breakpoints in our source sass files for our layout, grid system, and components. Note that measuring width isnt the only thing media queries can do, its just a particularly practical example. Responsive media queries for mobile devices with css.
If you decide to do it, it wont be through only css. The result of the query will be true if the media type specified in the media query matches the type of device the document is being displayed on, as well as all expressions in the media query are satisfied. Before we look at jquery, here is a brief introduction about media queries. Css3 media queries will uses maxwidth and minwidth to check for browser viewing resolution and apply the stylesheet only if conditions are met.
The only keyword prevents older browsers that do not support media queries with media features from applying the specified styles. Like we said earlier within the present day web which gets browsed almost likewise by mobile phone and desktop tools gaining your pages adapting responsively to the display screen they get shown on is a must. Nov 17, 2014 with css media queries, we can say if the browser is really narrow, do this, if its wider, do this, if its really wide, do this. Thats probably not generally a great practice, but it is helpful to know what the dimensions for all these devices are in a css context. Today, when building a new website, many developers build it for the desktop screen and then use media queries to retrofit it for the mobile and tablet.
Using css media queries is the most widely adapted solution in the wordpress community if you want to make sure your website is responsive. A media query is composed of an optional media type and any number of media feature expressions. With very little change, you can make an existing website mobile and tablet compliant. Detecting mobile browser properties with css3 media queries. I found that webkitbased browsers safari and chrome download the initially defined background image as well as the background image to be applied by the media query. Weve covered using css media queries to assign different stylesheets depending on browser window size. So to target small devices we can use the following syntax. The and keyword combines a media feature with a media type or other media features. Responsive design with css3 media queries web designer wall. A media query computes to true when the media type if specified matches the device on which a document is being displayed and all. The end result is working css media queries on browsers that dont natively support them.
May 12, 2011 the answer is a resounding yes and is due largely to the inclusion of media queries. If page speed is important to you chances are high youre already doing code splitting. In that example, we changed the layout of the entire page based on the space available. The not keyword reverts the meaning of an entire media query. Then after some minutes of googling, you have to include the css in the html. Media queries can tell us whether the device is in landscape or portrait mode, and give us the dimensions of not only the screens resolution but also its physical size. The answer is a resounding yes and is due largely to the inclusion of media queries. Realtime testing enables you to test your css media queries realtime. How to use css3 media queries to create a mobile version of.
If the browser window is 600px or smaller, the background color will be lightblue. The difference is that if the media query of the media attribute is evaluated to false then that. Extra small devices portrait phones, less than 576px no media query since this is the default in bootstrap small devices landscape phones. So in the case of the above tests, if youve got a high resolution device running android 2. Using css3 media queries, we can write css that targets specific device properties. Css3 media queries for all devices and browsers ie7, ie8. A media query computes to true when the media type if specified matches the device on which a document is being displayed and all media feature expressions compute as true. Aug 22, 2017 using css media queries is the most widely adapted solution in the wordpress community if you want to make sure your website is responsive. Since a mobile device sits on a constrained pipe slow already having to download all the css for the regular site, then the css for its screensize is certainly slow.
Creating media queries for responsive web designs the following is an exclusive extract from my new book, jump start responsive web design, 2nd edition. Css media queries allow you to target css rules based on for instance screen size, deviceorientation or displaydensity. Jul 19, 2010 the first way to use media queries is to have the alternate section of css right inside your single stylesheet. How to use css3 media queries to create a mobile version. In this guide, you will learn what responsive design is, how it works, how to use css media queries correctly, and what to do if your queries are not working. There are four media types that can be used with a media query. Oct 23, 2012 the script loops through all css referenced on the page and parses out the css rules that use media queries. It isnt required that we make such drastic changes with this technique though, so in this tutorial well go over a design tweak with a smaller scope. Media queries are incredibly useful because they solve a huge problem that arose quite suddenly in web design. Your best bet will to research javascript methods to do this, such as adding a class loaded. Media query is a powerful tool in a world where websites are viewed on a huge range of devices. Use css media queries to create responsive websites. For mobile devices, this could mean you save money on that expensive data plan by not having to download.
Multiple queries can be combined in various ways by using logical operators. Css styles are the rules that will be applied to a web element if the media rule evaluates to true. Css3 how to target only ie, firefox, chrome, safari. Copy paste your query in the textarea or build it using the selectboxes. A media query consists of a media type and at least one expression that limits the style sheets scope by using media features, such as width, height, and color. This means you can use css media queries to tweak css for an ipad, printer or create a responsive site. If i decrease the screen size of firefox upto 800px then both divs collapse and after some pixels media query works but that not happens in chrome. The point of this page is to test whether todays browsers will download stylesheets that are referenced with media queries that would not apply on that browser or device. The not keyword cant be used to negate an individual. Existing css parsers dont do a great job at parsing the details of media queries. If i visit a page that uses media queries does the browser download all of the style sheets or just the one that has been targeted.
The point of this page is to test whether todays browsers will download stylesheets that are referenced. When a media query is true, the related style sheet. With media query listeners, the demos script can determine the current evaluation of a media query and just download the necessary resolution image. Many times ive had to design responsive websites targeting specific devices with css media queries, and not just base the break points from the sites content. Css3 media queries will uses maxwidth and minwidth to check for browser viewing resolution and apply the stylesheet only if. With this, the browser will download all css resources, regardless of the media attribute. If you want to change this you have to define an absolute path for output. Mar 31, 2012 continue on below to see the css media queries for different devices, or see the live action through demo. A part of the css3 specification, css media queries expand the role of the media.
1257 1022 209 370 728 168 1123 69 959 985 435 982 1221 817 883 18 188 1456 120 1147 319 997 1247 274 596 1181 406 827 537 1156 144 381 542 373 969 1320 840 823 1101 1350 236 161 971