/* Шрифты */
@import url('https://fonts.googleapis.com/css?family=Roboto:400,500&display=swap&subset=cyrillic');
@import url('https://fonts.googleapis.com/css?family=Montserrat:700&display=swap&subset=cyrillic');

/* Основные стили */
body {
    background-color: #005EB8;
    font-family: Arial, sans-serif;
    color: #FFFFFF;
    text-align: center;
}
form {
    margin: 0 auto;
    max-width: 500px;
}
h1 {
    font-size: 2.5em;
    margin-top: 50px;
}
label {
    font-size: 1.2em;
    margin-top: 20px;
    display: block;
}
select, input[type="number"] {
    text-align: center;
    font-size: 1.2em;
    padding: 5px;
    border-radius: 5px;
    border: none;
    margin-top: 10px;
    width: 100%;
}
button {
    background-color: #FFD700;
    border: none;
    padding: 10px;
    font-size: 1.2em;
    border-radius: 5px;
    margin-top: 20px;
    cursor: pointer;
}
h2 {
    font-size: 1.8em;
    margin-top: 50px;
}
#result {
    font-size: 1.5em;
    margin-top: 20px;
}