#div1
{
width:100%;
float: left;
margin-right: auto;
margin-left: auto;
font-family:"sans-serif";
text-align:left;
white-space: normal;
}

#div3
{
float: left;
margin-right: auto;
margin-left: auto;
font-family:"sans-serif";
text-align:left;
moz-border-radius: 10px;/*mozilla*/
z-index: 1;
white-space: normal;
}


#div2
{
float: left;
background: #ffff99;
width: 275px;
height: 300px;
text-align: center;
font-family:"sans-serif";
white-space: nowrap;
}