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I think many designers and developers like to create animations. Yes, those interfaces look more interesting. But we have to be more careful.
In WCAG 2.2, there is section 2.3.3, which says that some users may experience dizziness, nausea, and headaches when they see animations that trigger moving elements.
Thus, if we create this type of animation, we should use the prefers-reduced-motion media feature. In this case, if people disable animations in the operating system, they won’t be displayed, and if they don’t do this, the animations will work. And we are going to take care of our users.
There is a problem that is especially common with vertical positioning. This is due to the way these properties work. The fact is that the justify-content and align-items properties ignore the size of flex items & they will go beyond its borders and may not be displayed correctly.
For example a modal window with a cross button beyond the window, which makes it unavailable. You need to zoom out of the page to close it.
It can be solved by using the margin property set to auto. Inside a flex container, the auto value will be calculated based on the size of the container and its flex items.
Developers often use anchor link to mark up interactive elements. The idea behind this is override the default link using JS and they will get button behavior.
At first glance, this makes sense. But there is a problem. Browsers still think it’s a link & right clicking it open the context menu of such an element, with options: “Open in a new tab”, “Open in a new window”, & “Open in a private window”.
When users see those items, they think that it is a link and they can open it, for example, in a new tab. When they do this, they get an unexpected result – they see the top of the page.
The alt attribute is quite useful. It helps screen reader users understand what is shown in the picture. Unfortunately, many developers don’t use it efficiently. They either duplicate the text around the picture or don’t add it at all.
But we can use alt differently. For example, use the title text as a basis and add more details about the image. For example, if you have a product card with a title and an image, you can use alt to describe the external characteristics of the product.
When Flexbox first appeared, many people liked the justify-content property, which allowed them to evenly distribute grid items using space-between or space-around. And of course, they began to use it. But there is one problem.
When we use these values, we don’t think that the number of items may change. For example, if I use space-between to add 2 more items to a 4-column grid, they will appear on each side of the parent and not at the beginning of the line as the user expects.
Therefore, it is better to use margin if you need IE11 support, or column-gap to set space between items.
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