/* RESET */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* BODY */
body {
    background: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

/* HEADER */
.main-header {
    background-color: #0077b5;
    color: white;
    text-align: center;
    padding: 60px 20px;

    border-bottom-left-radius: 120px;
    border-bottom-right-radius: 120px;

    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.main-header h1 {
    font-size: 2.5rem;
}

/* CONTAINER */
.container {
    margin: 40px auto 40px auto;
    margin-left: 40px;
    margin-right: 20px;
    padding: 30px;
    background: #fff;

    border-radius: 12px;

    /* BLUE BORDER */
    border: 2px solid #0077b5;

    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

/* TEXT */
h2 {
    text-align: center;
    color: #252641;
    margin-bottom: 15px;
}

.date {
    text-align: center;
    font-size: 14px;
    color: #888;
}

h3 {
    margin-top: 30px;
    color: #0077b6;
    border-left: 4px solid #0077b6;
    padding-left: 10px;
}

h4 {
    margin-top: 15px;
    color: #444;
}

p {
    margin: 10px 0;
}

ul {
    margin: 10px 20px;
}

ul li {
    margin-bottom: 6px;
}

/* FOOTER */
footer {
    margin-top: 40px;
    text-align: center;
    font-size: 14px;
    color: #777;
}

/* TABLET */
@media (max-width: 768px) {
    .main-header {
        padding: 40px 15px;
        border-bottom-left-radius: 70px;
        border-bottom-right-radius: 70px;
    }

    .main-header h1 {
        font-size: 1.8rem;
    }

    .container {
        width: calc(100% - 30px);
        margin: 20px auto 30px auto;
        padding: 20px;
    }
}

/* MOBILE */
@media (max-width: 480px) {
    .main-header {
        padding: 30px 10px;
        border-bottom-left-radius: 50px;
        border-bottom-right-radius: 50px;
    }

    .main-header h1 {
        font-size: 1.5rem;
    }

    .container {
        width: calc(100% - 20px);
        margin: 20px auto 20px auto;
        padding: 15px;
    }

    h3 {
        font-size: 16px;
    }

    p,
    li {
        font-size: 14px;
    }
}