#mnDIV {
  width:360px;
  height:120px;
  margin-left: auto;
  margin-right: auto;
  margin-top: 80px;
  padding-top: 15px;
  padding-left:10px;
  padding-bottom: 10px;
  background-color:#FFFFFF;
  border: .6rem solid #cccc2a;
}

@media screen and (min-width:600px) {
  #mnDIV {
  width:300px;
  height:110px;
  margin-top: 50px;
  padding-top: 15px;
  padding-left:10px;
 padding-right:15px;
  padding-bottom: 10px;
  background-color:#FFFFFF;
  border: .6rem solid #cccc2a;
  }