My demo (colors and main menu) doesn't work as it should

I use de sportline demo, it was perfectly working until this morning. At ones i saw this:
Bienvénue au portal de la communauté du diiwal Labé

All the colors gave something else, the layout very different and the main menu scrlling down as you can see in the site. I try to stay cool but it begins to scare me because i don't know what to do?

Please help me. I'm novice and i've made somany effort to not lose everything now that i was very proud of my first website ever.

It looks fine to me alphabim - what's the problem exactly?
Also - please read forum rules

In my screen i've everywhere blue color and the main menu



It may be on my connection or my screen but it doesn't look great to me.

you disabled css in your browser

I've done everything that i kan to restaure it, it is still like yesterday. I've tried it by friends and still the samething. First could u tell me if for you it is still ok as treehugger said and if it is what can i do to enable css in my browser. Can you ensure me that nothing went wrog in my installation. Don't take wrong, i'm just novice.

I can not help you, but while you wait for help from more experianced support, here is a little comfort:

The site looks perfect in firefox (green color)
But in IE 7 the main menu and footer menu are messed up and the site is in blue color.
Other than that, all is working. Not like your screen-shot where you only see the messed up menu

have you been editing template files? installed new extensions ect?

I opened it monday morning, nothing happened. Everything was ok. I changed my home page in 6 articles instead of 4, looked at it and changed it again in 4. I came back to my site and......... Before, on sunday i changed my logo and it's parameters 1024*120 instead of 250*120 and nothing went wrong. On monday when it happened i though it was that logo so i put it back to 250*120 and deleted the image of the logo.

Since i'm novice, i don't make many changes in the files. In extensions, i've tried to delete and reinstall JW_Allvideo that still doesn't work. I'll come back for that but now what urgent is my site is looking very scary.

Please do something heeeeeeeeeeeeelllllllllllllllllllppppppppppppppp!! !

you must have edited something and did not to ctrl+refresh to see current change ,

all I can suggest at this point is replace CSS folder with original one,
better jet , delete the one on server and move original one in or simply reinstall the template

Where can i find the original css folder?. Reinstalling the demo will be very difficult because i did it via youjomla membership and it is just ones. In other hand i will lost everything and will have to redo all of it again.