body {
  font-family: Arial, sans-serif;
  background-color: #00789f;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.container {
  background-color: white;
  padding: 20px;
  border-radius: 8px;
  width: 90%;
  max-width: 500px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  text-align: center;
}

.logo {
  max-width: 100%;
  height: auto;
  margin-bottom: 10px;
}

input[type="number"] {
  width: 100%;
  padding: 15px;
  font-size: 18px;
  margin-top: 10px;
  border-radius: 5px;
  border: 1px solid #ccc;
  box-sizing: border-box;
}

button {
  width: 100%;
  padding: 15px;
  font-size: 18px;
  margin-top: 10px;
  border: none;
  border-radius: 5px;
  background-color: #00789f;
  color: white;
  cursor: pointer;
}

button:hover {
  background-color: #005f7a;
}

#result {
  font-size: 28px;
  font-weight: bold;
  text-align: center;
  margin-top: 20px;
  color: #000;
}

#icon {
  text-align: center;
  font-size: 40px;
  margin-top: 10px;
}

.success {
  color: green;
}

.failure {
  color: red;
}