Images #Īn image has fixed dimensions and if it is larger than the viewport will cause a scrollbar. The Content is not sized correctly for the viewport Lighthouse audit can help you automate the process of detecting overflowing content. You should adjust this content to fit within the width of the viewport, so that the user does not need to scroll horizontally. For example, an image that is displayed at a width wider than the viewport can cause the viewport to scroll horizontally. When developing a mobile site with a meta viewport tag, it's easy to accidentally create page content that doesn't quite fit within the specified viewport. On both desktop and mobile devices, users are used to scrolling websites vertically but not horizontally forcing the user to scroll horizontally or to zoom out in order to see the whole page results in a poor user experience. Therefore we would not recommend using these attributes. When set, these can disable the user's ability to zoom the viewport, potentially causing accessibility issues. In addition to setting an initial-scale, you can also set the following attributes on the viewport: The Does not have a tag with width or initial-scale Lighthouse audit can help you automate the process of making sure that your HTML documents are using the viewport meta tag correctly. To ensure that older browsers can properly parse the attributes, use a comma to separate attributes.
#CHROME RESPONSIVE RESIZE FULL#
Adding the value initial-scale=1 instructs browsers to establish a 1:1 relationship between CSS pixels and device-independent pixels regardless of device orientation, and allows the page to take advantage of the full landscape width.
Some browsers keep the page's width constant when rotating to landscape mode, and zoom rather than reflow to fill the screen. An example of how the page loads in a device with the viewport meta tag. An example of how the page loads in a device without the viewport meta tag. This allows the page to reflow content to match different screen sizes, whether rendered on a small mobile phone or a large desktop monitor. A device (or density) independent pixel being a representation of a single pixel, which may on a high density screen consist of many physical pixels. Using the meta viewport value width=device-width instructs the page to match the screen's width in device-independent pixels. This means that font sizes may appear inconsistent to users, who may have to double-tap or pinch-to-zoom in order to see and interact with the content. To attempt to provide the best experience, mobile browsers render the page at a desktop screen width (usually about 980px, though this varies across devices), and then try to make the content look better by increasing font sizes and scaling the content to fit the screen.
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A meta viewport tag gives the browser instructions on how to control the page's dimensions and scaling. Pages optimized for a variety of devices must include a meta viewport tag in the head of the document. Modern responsive design considers all of these things to optimize the experience for everyone. For example some of your visitors will be using a touchscreen. In addition, devices have different features with which we interact with them. Screen sizes are always changing, so it's important that your site can adapt to any screen size, today or in the future. In this video the design moves from a narrow to a wide viewport, responding to the available screen real estate.Ī multitude of different screen sizes exist across phones, "phablets," tablets, desktops, game consoles, TVs, and even wearables. For example, on a phone users would see content shown in a single column view a tablet might show the same content in two columns.
The layout changes based on the size and capabilities of the device. Responsive web design, originally defined by Ethan Marcotte in A List Apart, responds to the needs of the users and the devices they're using. The use of mobile devices to surf the web continues to grow at an astronomical pace, and these devices are often constrained by display size and require a different approach to how content is laid out on the screen.
Take a look at our complete course on Responsive Web Design- Learn Design.
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