<div class="osszes" style="background:#636972">
			<div class="elsodiv ex1" style="float:left; max-width:300px; background:#4286f4">DIV1</div>
			<div class="masodikdiv ex2" style="float:left; max-width:500px; background:#af1a1a">DIV2</div>
			<div class="harmadikdiv ex3" style="float:left; max-width:1500px; background:#0ca004">DIV3</div>
		</div>