MOBILE PSA: can't blackout or put a spoiler

(sorry for the garbage quality of the picture since I can't log in to imgur so I have to cry using Facebook and FACEBOOK CONVERTS EVERYTHING TO .JPG)

Mobile indulging friends, do you sometimes hate it when you are about to make a comment but you just can't because you only have a few buttons present?

Here's a tiny method I use to do this haha:

For blacking out text, use this! DON'T FORGET TO PUT IT ON THE </> PART INSTEAD OF THE USUAL TEXT EDITOR:

• <span style="color: rgb(0, 0, 0); background-color: rgb(0, 0, 0);">Your text here lorem ipsum dia kurosawa is my waifu</span>.
• Be sure to pit span on the middle of <p></p>, <li></li>, and many more I can't list!

And it'll show as this if you copypaste my text:  Your text here lorem ipsum dia kurosawa is my waifu.

Great, now to put spoiler warnings next! To do it is... under this spoiler warning, of course!

I use this way, but it's too time consuming for me ngl, SO I WELCOME SUGGESTIONS

more quirks i have:

• Whenever I get on my PC, I have a character only visible to me and is exclusively made to test my noob HTML stuff (works well for me whenever i put themes on my OC bios too), so make your own to hoard codes or...
• Put them all in the notepad/memo app of your device! I also do that whenever I attempt to change put changes on my OCs sometimes