Apps and websites act differently in different browsers. This is because each of the browsers has its engines, add-ons, plugins, as well as differences in the desktop and mobile versions. Cross-browser testing aims to iron out these differences, making development more or less universal.
Responsive Design (RWD) means designing a website with specific property values, for example, a flexible layout grid that allows one layout to work on different devices. In addition to its changing structure, responsive design has other advantages:
While the positive sides of responsive design are obvious, there are several disadvantages. The biggest of these is loading speed, which is significantly slowed down by the high-resolution images and other visual elements required to design the webpage.
Adaptive Design (AWD), or dynamic display means designing a website with conditions that change depending on the device, based on several fixed-width layouts. For responsive layouts we use media queries and the relative sizes of the grid items which are specified using %. In adaptive design, server-side scripts first determine the type of device a user is using to access a site (desktop, phone, or tablet), then load exactly the version of the page that is most optimized for that device. For grid items, the dimensions are fixed in pixels (px). Therefore, the main differences between these techniques are: responsive design – one layout for all devices, adaptive design – one layout for each type of device.
In other words, the server takes over all the hard work instead of forcing the website to optimize itself. Among the advantages of the adaptive design are the following:
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This method is overshadowed by the fact that it is not easy to create an adaptive website. Due to the adaptation of the design to different devices, the development time is significantly bigger. Moreover, if you need to make any improvements to the website, you will have to make changes to all versions of it.