html, body {
  height: 100%;
}

#wrap {
  min-height: 100%;
}

#main {
  overflow:auto;
  padding-bottom:150px; /* this needs to be bigger than footer height*/
}

.footer {
  position: relative;
  margin-top: -60px; /* negative value of footer height */
  height: 60px;
  line-height: 60px;  clear:both;
  background-color: #f5f5f5;

}

.container{
    width: 70%;
}

#submit_button{
    margin-top: 40px;
}