Set the background image for the entire page
Define a class for the body element with:
background-image: url(../img/blackboard.jpg);
background-size: cover;
This creates the illusion that the blackboard is pushed up and down.
Define a class for the body element with:
background-image: url(../img/blackboard.jpg);
background-size: cover;
This creates the illusion that the blackboard is pushed up and down.