GWT/GXT Artifact not deploying correctly on tomcat

I am using IntelliJ pro for my GWT/GXT project . 

I have developed a lot in the project and everything works very well , 

Now when i am trying to deploy the project to tomcat . 

I created a war from intelliJ artifact .. But when running the war on tomcat , The whole Application UI went wrong , GXT default css not working fine. 

can i please get a help regarding the correct war deployment from IntelliJ project

thanks 

regards

Junaid