W3Schools data from January 2011 found that around 1.1% of users had a screen smaller than this, a number which will continue to decrease. The average size of these web pages is around 960 pixels, which is what you would expect as the most screen resolutions are 1024x768 or larger. Here are some examples of fixed width sites, along with the web page size: Of the most popular websites in the world, most of their page sizes are fixed width. In simple terms, fixed-width sites will look the same on every screen, irrespective of how wide it is, while fluid sites will expand to fill the screen. You have two choices - a fixed width or a fluid layout. ![]() This is the first decision to make when designing a website. To understand what the individual elements of a page are for, and why you need them, read our anatomy of a web page. Our article on web page size and layout breaks down web design into simple concepts and helps you decide on a format for your website. > Note that this article is now a little old, for more information about modern design standards, check out our Responsive Design page. For example, did you know that nine out of the top ten most popular websites in the world use a fixed-width, centre-aligned design? Maybe you should too. As we discussed, not using flex-wrap: wrap can cause overflow, as can grid-template-columns: 1fr 350px when the screen is narrower than 350 pixels.Most web pages follow a common set of sizes and layouts, which you'll recognise even if you aren't aware of them. Use CSS Grid and Flexbox CarefullyĪs useful as CSS grid and flexbox are, they can easily cause overflow if used incorrectly. Account for User-Generated Contentįor a component like a comments thread, account for cases in which the user will paste a long URL or type a long word, as explained above. In doing so, you ensure that the layout can handle different varieties of content. Nothing beats testing with real content on a website. I hope you find it useful! Test With Real Content How to Avoid Overflow in CSSīelow are things to check to reduce overflow issues in CSS. Moreover, applying overflow-x: hidden to the body element is not a good idea because position: sticky won’t work if a parent has overflow-x: hidden. ![]() If you have overflow, then it’s better to solve the root issue. Opting for overflow-x: hidden is like putting on a bandage without addressing the problem. Is Applying overflow-x: hidden to body a Good Idea? ( Large preview)ĭouble-check every ad on the website to ensure that it’s not causing overflow. Mobile viewport with an overflow caused by an ad that is wider than the viewport. Add overflow-x: hidden to the parent element to prevent this. * px)`Īds injected on page load can cause overflow if they’re wider than their parent. var docWidth = Īpplying CSS’ outline to all elements on the page gives us a hint about elements that go beyond the page’s body. This is handy for pages with a lot of elements. We can add a snippet to the browser console to show any elements wider than the body. ( Large preview) Using JavaScript to Find Elements Wider Than the Body Whenever you can scroll, there is an overflow in play. If you’re able to scroll, this is a warning that something is wrong with the page. The first way to discover an overflow issue is by scrolling the page horizontally. Let’s explore the ways to detect overflow. There are different ways to detect overflow, from manually scrolling to the left or right or by using JavaScript. If we know when and where it happens, we can home in on that part of a web page. We will explore all of the causes in this article.Īn important part of solving this issue is noticing it in the first place. It could occur because of unexpectedly wide content or a fixed-width element that is wider than the viewport. ![]() ![]() Overflow with a fixed-width element that is wider than the viewport. An overflow issue occurs when a horizontal scrollbar unintentionally appears on a web page, allowing the user to scroll horizontally. What Is an Overflow Issue?īefore discussing overflow issues, we should ascertain what one is. Some issues can be fixed quickly, and some need a little debugging skill. Because there are many causes of scrollbar problems, there is no straightforward solution. If you’re a front-end developer, you may have come across horizontal scrollbar issues, especially on mobile. We will also explore how modern features in the developer tools (DevTools) can make the process of fixing and debugging easier. In this article, we will explore the causes of overflow issues and how to solve them.
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