How to Create Browser Specific CSS Code

Related Product On This Page Common CSS Browser Compatibility IssuesFebruary 20, 2026 · 8 min read · Testing Guide

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How to Create Browser Specific CSS Code

Every web page differently in different browsers. When a browser read the code behind a site, it translates the info in the nonpayment settings. For case, Safari and Internet Explorer have different default fonts, which means the font on a specific site changes when view in these browsers. Safari defaults to the Helvetica menage and Microsoft & # 8217; s Internet Explorer nonremittal to the Arial font family.

This clause discourse how to create browser-specific CSS code to ensure cross-browser compatibility for a website.

Common CSS Browser Compatibility Issues

Default issues are likely the most common reason for variance between browser. When work with HTML and CSS, it is mutual to face browser-specific subject for the same web application. Therefore, it becomes necessary to develop browser-specific CSS code to assure a seamless user experience, irrespective of the browser they use.

  • CSS Grid:is widely used in web design. It provides a grid framework, within which elements can be rank and properties applied as required. Given its ease of use and flexibility, CSS Grid has become a fixture among web designers and developers.

However, elements of CSS Grid do not function systematically on all browsers. For example, enliven grid go seamlessly in Mozilla ’ s Gecko engine but not on Chromium and Webkit.

  • CSS place: sticky:This property freeze an element on the viewport, yet when a user is scrolling on the page. Usually, it is employ to fix navigation saloon on top of the screen. It usually works rather easily with headers and navigation bars, but inconsistencies show up when it is deployed with other component such as the heading of a table. In this case, it fails in Chromium. There are also legion inconsistencies that show up with implementing this in Safari.
  • CSS Flexbox:CSS Flexbox is widely democratic, thanks to its versatile nature and its effortless ability to make a container and inhabit it with factor. However, users will often look issues with handling aspect ratio (height and width) within Flexbox. This usually utilize to cases when they have to grapple images within the containers established by CSS Flexbox. Additionally, issues likewise pop up when it comes to aligning items within container on multiple elements and scales. For illustration, it has been noticed that visibility: prostration does not function on the Blink engine & # 8211; an instance of CSS browser inconsistency.

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Solutions for managing Cross Browser Compatibility Issues in CSS

The most effective way to address and resolve the said issues is to pen and implement browser-specific CSS code. Browser-specific codification for Chrome, Internet Explorer, Edge, Firefox, and Safari is yield below.

Bear in mind that once a website is ready to be tested, it must be verified and corroborate on real browsers and devices. Don ’ t limit your test to the many inadequacies of emulator and simulator; run your code in.

To add Browser-specific code in CSS, it is essential to detect the browser. This can be done using CSS and JavaScript as see in the section below.

Detect Browser using CSS and JavaScript

While find the browser is not a full practice because it can hinder browsers to access the website as other browsers do and relies on thebrowser useragent. However, you might still use it sometimes to offer a consistent user experience by doing a workaround, especially when certain CSS Features and Properties are not fully supported by the browser.

The better way to ensure Browser Compatibility is by using

You can determine the browser in use just by accessing thenavigator.userAgent.However, userAgentwill not be able to generate the Browser Names directly, and you can use the below JavaScript code.

function whichBrowser () {if (isFirefox ()) {render `` Firefox '';} else if (isEdge ()) {return `` Edge '';} else if (isIE ()) {return `` Internet Explorer '';} else if (isOpera ()) {return `` Opera '';} else if (isVivaldi ()) {return `` Vivalid '';} else if (isChrome ()) {return `` Chrome '';} else if (isSafari ()) {return `` Safari '';} else {revert `` Unknown '';}} function agentHas (keyword) {return navigator.userAgent.toLowerCase () .search (keyword.toLowerCase ()) & gt; -1;} function isIE () {return!! document.documentMode;} function isSafari () {return (!! window.ApplePaySetupFeature ||!! window.safari) & amp; & amp; agentHas (`` Safari '') & amp; & amp;! agentHas (`` Chrome '') & amp; & amp;! agentHas (`` CriOS '');} use isChrome () {homecoming agentHas (`` CriOS '') || agentHas (`` Chrome '') ||!! window.chrome;} function isFirefox () {return agentHas (`` Firefox '') || agentHas (`` FxiOS '') || agentHas (`` Focus '');} function isEdge () {return agentHas (`` Edg '');} purpose isOpera () {return agentHas (`` OPR '');} use isVivaldi () {homecoming agentHas (`` Vivaldi '');}

Code to Detect Browser using CSS

/ * * Internet Explorer * / @ medium all and (-ms-high-contrast: none), (-ms-high-contrast: active) {div {exhibit: block;}} / * * Microsoft Edge * / @ supports (-ms-ime-align: auto) {div {showing: block;}} / * * Mozilla Firefox * / @ -moz-document url-prefix () {div display: cube;}} / * * Safari * / @ media not all and (min-resolution: 0.001dpcm) {div display: cube;}} / * * Chrominum * / @ medium blind and (-webkit-min-device-pixel-ratio: 0) and (min-resolution: 0.001dpcm) {div: not (*: root) {display: block;}}

Pro tip: Tools like SUSA can handle this autonomously — upload your app and get results without writing a single test script.

Let ’ s begin with browser-specific CSS code for IE, Chrome, Mozilla, Edge, and Safari browsers.

CSS Code for Google Chrome Compatibility

All browser behave otherwise and experience their own type of CSS. In the case of Chrome browsers, devs need to set the WebKit pixel ratio. The code below attest how to do so with various Chrome versions.

/ * Chrome adaptation 29 and above * / @ medium blind and (-webkit-min-device-pixel-ratio:0) and (min-resolution: .001dpcm) {selector {place: value;}}
/ * Test website on real Chrome adaptation 29 and above * /
/ * Chrome adaptation 22-28 * / @ media screen and (-webkit-min-device-pixel-ratio:0) {chooser {-chrome-: alone (; property: value;);}} / * Chrome, Safari, and also the Edge Browser and Firefox * / @ medium and (-webkit-min-device-pixel-ratio:0) {selector {belongings: value;}}

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CSS Code forInternet Explorer (IE) Compatibility

In the case of IE browser, use conditional statements for CSS code. The representative here uses theif conditionalfor all sections, like the lintel subdivision, HTML elements, etc.

& lt;! -- [if IE] & gt; & lt; link rel= '' stylesheet '' type= '' text/css '' href= '' only-ie.css '' / & gt; & lt;! [endif] -- & gt; / * Using conditional comments with head subdivision CSS * / & lt;! -- [if IE] & gt; & lt; style type= '' text/css '' & gt; / * * * * * * * * * * * * css for all IE browser * * * * * * * * * * * * * * * * / & lt; /style & gt; & lt;! [endif] -- & gt; / * Using conditional comments with HTML elements * / & lt;! -- [if IE] & gt; & lt; div & gt; / * content * / & lt; /div & gt; & lt;! [endif] -- & gt; / * IE10+ * / @ media screen and (-ms-high-contrast: active), (-ms-high-contrast: none) {selector {property: value;}} / * IE6,7,9,10 * / @ medium screen and (min-width: 640px), screen\9 {picker {property: value;}} / * IE6,7 * / @ media screen\9 {picker {property: value;}} / * IE8 * / @ media \0screen {selector {property: value;}} / * IE9,10 * / @ medium blind and (min-width:0\0) {selector {property: value;}}

Developer Tip:Want to run a flying website test onlegacy IE browser versions? Try now.


CSS Code forMicrosoft Edge Compatibility

When it comes to the Microsoft Edge browser, the process is simple as it involves a simple picker that has a place value. It too cater automatic alliance, which is considered the leisurely way to make browser-specific CSS codification.

@ supports (-ms-ime-align: auto) {selector {property: value;}}

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CSS Code for Mozilla Firefox Compatibility

In Firefox, first use the prefix for the URL. Or, usemoz-appearanceto show an element using platform-native styling based on the operating system & # 8217; s theme.

@ -moz-document url-prefix () {picker {place: value;}}

Or

@ supports (-moz-appearance: none) {selector {property: value;}}

CSS Code for Safari Compatibility

In the case of Safari web browser, the medium uses minimum resolution and WebKit appearing holding in the late versions. In the late Safari versions, it used pel proportion for a CSS belongings.

/ * Safari 11+ * / @ media not all and (min-resolution: .001dpcm) {@ supports (-webkit-appearance: none) and (stroke-color: transparent) {selector {place: value;}}} / * Test website on real Safari 11+ * / / * Safari 10.1 * / @ medium not all and (min-resolution: .001dpcm) {@ support (-webkit-appearance: none) and (not (stroke-color: transparent)) {selector {property: value;}}} / * Safari 6.1-10.0 (but not 10.1) * / @ media screen and (min-color-index:0) and (-webkit-min-device-pixel-ratio:0) {@ media {selector {holding: value;}}}

Once codification has be created, it must be tested on existent browsers and devices to ensure that the CSS code is furnish accurately across different browsers. The easiest way to do this is to deport trial on a.

BrowserStack offers 3500+ existent browsers and devices for manual and. Testers can simply, pick the device-browser-OS combination they want, and start testing their website performance. It is easygoing enough to see what features do not supply or function on which browser & # 8211; and then backtrack to the CSS to name and resolve the matter.

Since BrowserStack only provides existent browser and devices, testers do not have to address with the restriction of. They get instant feedback on a website ’ s UX as it appears in the real world.

In a world where each website is accessed through multiple browsers and browser versions, developer, testers, and organizations can not afford to estrange users of a particular browser by letting uncongenial CSS evasion into product.

Incorporate the info in this article when make CSS code for website development. It will ensure that devs and examiner don ’ t receive to act as difficult to provide a plus, highly optimized user experience as part of every website they make.

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