.btn__cam__fee_pre{
  background-color:#CCC;
  border:2px solid #CCC;
  color:#fff;
}
.btn__cam__fee_pre:hover{
  background-color:#fff;
  border-color:#CCC;
  color:#999
}
.btn__cam__fee_pre::before,.btn__cam__fee_pre::after{
  background-color:#CCC
}
.btn__cam__fee_pre:hover::before,.btn__cam__fee_pre:hover::after{
  background-color:#CCC
}