.btn_clear_pop_up{
    background-color:#0aa3ed;
    color:white;
  
}
.btn_append_pop_up{
    background-color:#27ae60;
    color:white;
  
}

.btn_clear_pop_up:hover {
  color:white;
}
.btn_append_pop_up:hover {
  color:white;
}