body {
  background: #999;
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  overflow: auto;
}

#frm {
    border: solid gray 1px;
    width: 200px;
    border-radius: 2px;
    margin: 120px auto;
    background: white;
    padding: 40px;
}

#btn{
    color: #fff;
    background: #337ab7;
    padding: 7px;
    margin-left: 10%;
}

.inbox{
    width: 150px;
}