Anki
Flatpak version
Files location
~/.var/app/net.ankiweb.Anki/data/Anki2/User 1/collection.media/
Stuff
Strikethrough
Go to the field, edit HTML, and enter:
<del> .... text .... </del>
Hide shit
Add into styling of the cards:
.V {opacity:0 ; line-height:0 ;}
.V:hover {opacity:1 ; line-height:inherit ;}
And surround what you want to hide and show when hovering:
<div class="V">whatever</div>
<span class="V">whatever</span>
<span class="V">
Strikethrough tag in HTML
<s>