Here are some code snippets with animations when the user hovers over things on a web page. These can be used a micro interaction to capture user’s attention.
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Have a look at this Material Design navigation concept. Designed by Anton Bacaj.
A nice little Material Design check-box you can use in your project. Designed by Taylor Palmer based on his Dribbble design.
A pure CSS play button. Would be great on media player’s and other projects with a play button.
A simple material design inspired navigation menu with aligned dropdown. Designed by Cole Waldrip.
These hover effects using various SVG shape would look so good on your image gallery type projects. Designed by Manoela Ilic.