Hi,
mickey12345: In other words, when I resize my browser window, the masterpage resize fluidly but all the controls stay put.
If you want to make the all the controls resize when you resize the the browser window, you also need to set the height of the control is by percent %, and set the controls' width and height is 100% that is in the div.
Additon, you also set the html and the body's width and height is 100%. Like below:
* {margin: 0; padding: 0;}
html, body
{
height: 100%;
margin: 0px;
padding: 0px;
top: 0px;
left: 0px;
}
Hope it helps.