title: CSS Div arrengement and aligment issue
body: <p>I am css begginer and i have a problem with div arrengment.</p>
  <p>I want to place a div in the top part of the screen, 150px 100% width.
  and another div right below which will take the reminder part of the screen.</p>
  <p>If I add the second div &quot;height: 100%&quot; it surpass the screen size and makes me scroll and i dont want that. just that it will take the free screen area, and adjust to window size.</p>
  <p>thank you!!</p>