Full Width Images on a Website

so , hello guys
if anyone can help, please do.
I have been trying to make a picture full width on a website but in vain. I thought this might be fixed with HTML coding or something
Here is the html code, what should i change to get full width?
<p><img src="https://cdn.youcan.shop/stores/cde0b3a7260d1ecac766a611bf7ba949/others/6NxU4wVHBVFZE1JCAhs8GVfq3gPcPEdKLynStHYp.png" style="width: 1000px;" class="fr-fic fr-dib" data-name="stores/cde0b3a7260d1ecac766a611bf7ba949/others/6NxU4wVHBVFZE1JCAhs8GVfq3gPcPEdKLynStHYp.png"><img src="https://cdn.youcan.shop/stores/cde0b3a7260d1ecac766a611bf7ba949/others/dmHm2pn4TTGMKOxUviTDnlyaN2zkFw7Gt15by3OK.png" style="width: 1000px;" class="fr-fic fr-dib" data-name="stores/cde0b3a7260d1ecac766a611bf7ba949/others/dmHm2pn4TTGMKOxUviTDnlyaN2zkFw7Gt15by3OK.png"></p><p><br></p>

Change width attribute to 100%

<img src="" class="width-100">

You can do it this way.

Set the image's width to 100%,