.k_left
{
    width:300px;
    float:left;
}
.k_right
{
    margin-left:310px;
    width:300px;
}
.submit
{
   text-align:center;
   }
.submit input
{
    width:200px;
    height:30px;
    border:1px solid black;
    background-image: url();
}