CSS disapearing when updating

Are you styling in the Visual/Text editor when writing a post or page?
How are you putting these style in and what are you styling?

I’m using inline styling in the Text editor. I’m currently styling just pages.

An example would be:
<div style=”width:300px; height:300px; border: 2px solid black; border-radius:10px 10px 10px 10px;”></div>

Just inserted your code…
<div style="border: 2px solid black; border-radius:10px 10px 10px 10px"></div>
…in a post in my dev site and it worked fine.
I even switched between text and visual and back again and the code remained.
You may have a plugin issue – have you updated any plugins recently or your theme?

Thing is im not the host, but i don’t recall my hosting company updating anything.

Could it be permission issues? I’m still new to wordpress and i don’t really know how it works deep inside.

I talked to the company about giving me more permissions so i could do more stuff without having to ask them all the time, maybe they fucked up and gave me less permissions?

Who is your hosting company?
You should have a username and password to get into your account, yes?

It’s a local company and yes i’ve got my account. I can edit CSS in pages with the Text Editor no problem, this is happening just with certain css properties and code (Javascript,PHP, etc)…They mentioned something about me not being able to acquire super-admin privileges because of security measures…Could that be it?

Actually, when I asked this…

You may have a plugin issue – have you updated any plugins recently or your theme?

… I meant in your WordPress Dashboard.
You login to your site and you are in your Dashboard.
Look on the left menu for “Plugins” and click on it. These are all the plugins installed in your site.
Have you updated any of these lately?
Are any of them a different color than the rest (usually pink) and have a link just below the description of the plugin that says “Update Now”

Nope none.

Okay. Deactivate all (…yes, all) your plugins and try to use the div code in your text/visual editor and see if it stays.
If it doesn’t, then leave your plugins deactivated for now, and activate the default Twenty-Sixteen theme (…or 2015, 2014) which will deactivate your present theme.
Try to use the div code in your text/visual editor and see if it stays.

I wish i could that, but i do not have control over plugins nor themes. It’s all up to my host company, they host the website and seem to keep admin privileges on all websites they host.

I already asked them about this issue, but they are still haven’t asnwered, so i thought i might just try luck here…

Anyway, thanks for trying to help me out, really appreciated, if you come across some other possible solution, post it!

Best regards.

What is your hosting company’s name?

It’s a local company in Spain, Animsa.