html {
    box-sizing: border-box;
}

*,
*::before,
*::after {
    box-sizing: inherit;
}

body {
    margin: 0;
    padding: 80px 24px 0;
    background-color: #f9f9f9;
    color: #333333;
    font-family: Arial, sans-serif;
    line-height: 1.6;
    text-align: center;
}

main,
footer {
    width: 100%;
    max-width: 900px;
    margin-right: auto;
    margin-left: auto;
}

.brand-name {
    margin-bottom: 20px;
    font-size: 48px;
    font-weight: bold;
    line-height: 1.1;
}

.survey {
    color: #007bff;
}

.bridge {
    color: #666666;
}

.tagline {
    margin-bottom: 40px;
    color: #333333;
    font-size: 20px;
    font-style: italic;
}

.service-description {
    margin-bottom: 16px;
}

.client-portal {
    margin-top: 32px;
}

.client-sign-in {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 6px;
    background-color: #007bff;
    color: #ffffff;
    font-size: 18px;
    font-weight: bold;
    text-decoration: none;
}

    .client-sign-in:hover,
    .client-sign-in:focus {
        background-color: #0069d9;
    }

.email {
    margin-top: 32px;
    margin-bottom: 60px;
    font-size: 18px;
}

    .email a {
        color: #007bff;
        text-decoration: none;
    }

        .email a:hover,
        .email a:focus {
            text-decoration: underline;
        }

footer {
    margin-top: 40px;
    padding: 20px 0;
    border-top: 1px solid #dddddd;
    color: #777777;
    font-size: 14px;
}

@media (max-width: 600px) {
    body {
        padding-top: 48px;
    }

    .brand-name {
        font-size: 38px;
    }

    .tagline {
        font-size: 18px;
    }
}