body {
    background-color: white;
    margin: 0px;
}

header {
    background-color: rgb(5, 94, 209);
    display: flex;
    flex-direction: column;
    text-align: center;
    padding: 25px;

}

nav a {
    text-decoration: none;
    color: white;
    padding: 10px;
    margin: 10px;
}

nav {
    display: flex;
    flex-direction: column;
}

header h1 strong {
    color: #1B94E3;
    font-size: 125%;
}

header h1 {
    color: white;
}

section {
    display: flex;
    flex-direction: column;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    padding: 20px;
    text-align: justify;
    background-color: aqua;
}

section h1 {
    color: #1B94E3;

}

article p {
    text-align: justify;
    color: blue;
}

footer {
    text-align: center;
    background-color: blue;
}

footer a {
    text-decoration: none;
    color: white;
    font-size: 2em;
}

@media (max-width: 850px) {
    header p {
        display: none;
    }
}

@media (min-width: 860px) {
    body {
        background-color: black;
    }

    nav {
        flex-direction: row;
        justify-content: center;
    }

    header {
        background-color: black;
    }

    header p {
        color: #165ee5;
    }

    section {
        background-color: black;
        display: flex;
        flex-direction: row;

    }

    article {
        padding: 20px;
        text-align: center;
        margin: 10px
    }
}
    

   
@media (min-widht: 1280px) {
        header {
            padding: 10px auto;
        }

        header img {
            display: block;
            width: 100%;
            max-width: max-content;
            border-radius: 10px;
            box-shadow: #165ee5;
        }
    }