.btn-outline-primary {
  background: transparent;
  border-color: #cfd5d6;
  color: #323939;
  transition:0.5s ease all;
}

.btn-outline-primary:hover, .btn-outline-primary:focus, 
.btn-outline-primary:not(:disabled):not(.disabled):active, 
.btn-outline-primary:not(:disabled):not(.disabled).active, 
.btn-outline-primary:not(:disabled):not(.disabled):active:focus{
  background: #cfd5d6;
  border-color: #cfd5d6;
  color: #323939;
}