Why will css not open when i click it, it only says"preparing to launch" and then nothing happens please help :confused:

need more information like specs and the such

"preparing to launch" usually means that it is downloading updates.

Has this problem only started occurring recently?
Were you able to play CSS before?

If you look at the bottom right of your monitor you should see the STEAM icon in the tray. If it has a bunch of moving white dots on it, it just means that you are downloading files. Just wait until the white dots are gone.