body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    text-align: center;
}

.calculator {
    background-color: #fff;
    padding: 20px;
    border-radius: 25px;
    box-shadow: 0 0 60px rgba(0, 0, 0, 0.2);
  
    margin: 0 auto;
}

h1 {
    font-size: 24px;
    margin-bottom: 20px;
}

.input-container {
    margin-bottom: 10px;
}

label {
    font-weight: bold;
}

input {
    width: 100%;
    padding: 5px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

.result {
   margin-top: 20px;
    font-weight: bold;
     color:green;
     font-size:25px;
     background-color:yellow;
}

options {
    margin-top: 10px;
}

select {
   width: 100%;
    padding: 3px;
    border: 3px solid #ccc;
    border-radius: 25px;
    border-color:green;
}

button {
    background-color: #0074cc;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 10px;
}

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