* {
    box-sizing: border-box;
}

body {
    background: linear-gradient(90deg,rgba(42, 123, 155, 1) 0%, rgba(87, 199, 133, 1) 50%, rgb(133, 232, 214) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    max-width: 500px;
    width: 100%;
    border-radius: 16px;
    padding: 20px;
    background-color: rgb(173, 0, 0);
    color: white;
    font-family: Georgia, 'Times New Roman', Times, serif;
}

form {
    padding: 20px;
    border-radius: 16px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.348);
    background-color:#F2003C;
    text-align: center;
}

input {
        width: 90%;
        padding: 10px;
        margin-bottom: 15px;
        border-radius: 6px;
        border: none;
        font-size: large;
}

#btnCalculate {
        width: 40%;
        padding: 10px;
        border-radius: 6px;
        border: none;
        margin-bottom: 20px;
        font-size: large;
        cursor: pointer;
}

.output {
    padding: 20px;
    border-radius: 16px;
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.2);
    background-color:#b70e38;
    text-align: center;
}