* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto', sans-serif;
    font-weight: 300;
    transition: 0.4s;
}

body {
    background-color: #778ca3;
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    height: 100vh;
}

.age-calculator {
    max-width: 550px;
    width: 90%;
    background-color: #d1d8e0;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

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

.age-calculator form {
    display: flex;
    flex-direction: column;
}

.age-calculator form .input-area {
    display: flex;
    flex-direction: column;
    margin-bottom: 20px;
}

.age-calculator form .input-area .input {
    display: flex;
    flex-direction: column;
    margin-bottom: 20px;
}

.age-calculator form .input-area .input label {
    margin-bottom: 5px;
}

.age-calculator form .input-area .input input {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 10px;
    outline: none;
}

.age-calculator form .calculate-button {
    display: flex;
    justify-content: center;
}

.age-calculator form .calculate-button input {
    padding: 10px 20px;
    background-color: #778ca3;
    color: #fff;
    border: none;
    border-radius: 20px;
    cursor: pointer;
}

.age-calculator form .calculate-button input:hover {
    background-color: #5f6f7f;
    padding: 10px 30px;
}

.result-area {
    background-color: #d1d8e0;
    margin-top: 20px;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

.result-area h3 {
    font-weight: 400;
    text-align: center;
    text-transform: capitalize;
}