* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #ffffff;
    color: #000000;
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    margin-bottom: 40px;
}

h1 {
    font-size: 32px;
    font-weight: normal;
    margin-bottom: 20px;
}

h2 {
    font-size: 24px;
    font-weight: normal;
    margin-bottom: 20px;
    margin-top: 40px;
}

h3 {
    font-size: 20px;
    font-weight: normal;
    margin-bottom: 15px;
    margin-top: 30px;
}

.intro {
    font-size: 16px;
    margin-bottom: 15px;
}

p {
    font-size: 16px;
    margin-bottom: 15px;
}

a {
    color: #000000;
    text-decoration: underline;
}

a:hover {
    text-decoration: none;
}

.section {
    margin-bottom: 40px;
}

.tariff {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #e0e0e0;
}

.tariff:last-of-type {
    border-bottom: none;
}

.tariff-details {
    margin-left: 20px;
}

.tariff-details p {
    margin-bottom: 10px;
}

.note {
    font-style: italic;
    margin-top: 20px;
    color: #666666;
}

.contacts ul {
    list-style: none;
    margin-left: 20px;
    margin-top: 10px;
}

.contacts li {
    margin-bottom: 8px;
}

.legal {
    margin-left: 20px;
}

.legal p {
    margin-bottom: 10px;
}

strong {
    font-weight: bold;
}

nav {
    text-align: center;
    margin-bottom: 40px;
    padding: 20px 0;
    border-bottom: 1px solid #e0e0e0;
}

nav a {
    display: inline-block;
    margin: 0 15px;
    padding: 10px 20px;
    text-decoration: none;
    color: #000000;
    font-size: 16px;
    border: 1px solid #000000;
    transition: background-color 0.3s, color 0.3s;
}

nav a:hover {
    background-color: #000000;
    color: #ffffff;
    text-decoration: none;
}