.btn {
  border-radius: 0;
  text-transform: uppercase;
  text-decoration: none;
  box-shadow: 0 2px 2px 0 rgba(0, 0, 0, 0.14), 0 3px 1px -2px rgba(0, 0, 0, 0.2), 0 1px 5px 0 rgba(0, 0, 0, 0.12);
  -webkit-transition: all 0.2s ease;
  -moz-transition: all 0.2s ease;
  -ms-transition: all 0.2s ease;
  -o-transition: all 0.2s ease;
  transition: all 0.2s ease;
}
.btn:hover {
  opacity: 0.75;
  filter: alpha(opacity=75);
}
.btn.btn-app {
  color: #000;
  background-color: #F4F4F4;
}
.btn.btn-app2 {
  color: #FFF;
  background-color: #1A1A5B;
}