body {
  font-family: Arial, sans-serif;
  background-color: #f8f8f8;
  text-align: center;
}

header, footer {
  background-color: #6495ED;
  color: white;
  padding: 10px;
}

nav a {
  margin: 0 10px;
  text-decoration: none;
  color: #000000;
}

.photo {
  border-radius: 10px;
  width: 200px;
  box-shadow: 0 0 10px gray;
}

#calculator {
      background: white;
      width: 300px;
      margin: 20px auto;
      padding: 15px;
      border-radius: 10px;
      box-shadow: 0 0 10px rgba(0,0,0,0.2);
    }

    input {
      padding: 8px;
      margin: 5px;
      width: 80%;
      border-radius: 5px;
      border: 1px solid #ccc;
    }

    button {
      background-color: #004080;
      color: white;
      border: none;
      padding: 8px 12px;
      margin: 3px;
      border-radius: 5px;
      cursor: pointer;
    }

    button:hover {
      background-color: #002b59;
    }