[html] How to animate GIFs in HTML document?

try

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<img src="https://cdn.glitch.com/0e4d1ff3-5897-47c5-9711-d026c01539b8%2Fbddfd6e4434f42662b009295c9bab86e.gif?v=1573157191712" alt="this slowpoke moves"  width="250" alt="404 image"/>
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and switch the src with your source. If the alt pops up, try a different url. If it doesn't work, restart your computer or switch your browser.