body {
    font-family: sans-serif;
    padding: 100px;
    background-color: black;
}

.container {
    max-width: 400px;
    margin: 0 auto;
    background-color:white;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

h1 {
    text-align: center;
    margin-bottom: 20px;
}

.inputs {
    display: flex;
    flex-direction: column;
    margin-bottom: 10px;
}

label {
    margin-bottom: 5px;
}

input[type="date"] {
    padding: 5px;
    border: 1px solid #ccc;
    border-radius: 3px;
}

#calculate {
    background-color: black;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    margin-top: 10px;
   margin-left: 135px;
}

#result {
    text-align: center;
    font-weight: bold;
    margin-top: 10px;
}