Are you serious? I am aware of these tutorials and contents covered in these tutorials. I am not asking for detailed CSS/Bootstrap tutoring. You may direct me a file that I need to modify the CSSs to make what I asking happen. Please be more professional, and try to help instead of pointing me to a tutorial web site. Are there css rules in a CSS file that I need to modify for the effect I am asking? Is there a code in a .js file that needs to be modified?