adding tag makes the page to crash - SharePoint 2013

I do have a carousel  web part and was trying to add a Video in it.

<video id="vid_0" class="Vplay" style="width:100%;height:100%;" autoplay loop playsinline muted><source src="en-us/atcFinal/images/video.mp4" type="video/mp4">Your browser does not support the video tag.</video>   

the page is getting crashed. On Premise Sharepoint 2013 enviornment.

any idea why its crashing?

thanks,

Ammar