*{
  margin: 0;
  padding: 0;
}
body {
  font-family: Arial, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  
  background-color: #f4f4f4;
  
}
.calculator {
  background-color: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  width: 300px;
  text-align: center;
}
input, button {
  width: 100%;
  padding: 10px;
  margin: 10px 0;
  
  
  font-size: 16px;
  border-radius:4px;
  border: 1px solid #ddd;
}
#dob{
width: 278px;
margin-right: 20px;
}
button {
  cursor: pointer;
  background-color: #4CAF50;
  color: white;
}
button:hover {
  background-color: #45a049;
}
.result {
  font-size: 20px;
  margin-top: 20px;
  background-color:  #e8f5e9;
  padding: 10px;
  border-radius: 5px;
}
@media (max-width: 100px) {
  .calculator {
      width: 90%;
  }
}