.containersa {
   
  text-align: center;
  background: #fff;
  padding: 20px;
   border: 1px solid #d1fae5;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.1);
  border-radius: 8px;
}

.datetime-picker {
  margin-bottom: 20px;
}

button {
  padding: 10px 20px;
  margin: 10px;
  font-size: 16px;
  cursor: pointer;
  border: none;
  border-radius: 5px;
  background-color: #007bff;
  color: white;
}

button:hover {
  background-color: #0056b3;
}

.countdown {
  display: flex;
  justify-content: center;
  margin-top: 30px;
}

.countdown div {
  margin: 0 15px;
  font-size: 32px;
}

.countdown small {
  display: block;
  font-size: 14px;
  margin-top: 5px;
}