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

body {
    font-family: Arial, sans-serif;
    background: #f4f4f4;
    line-height: 1.6;
}

.container {
    width: 90%;
    margin: auto;
}

header {
    background-image: url("https://images.unsplash.com/photo-1508098682722-e99c643e7f0b");
    background-size: cover;
    background-position: center;
    height: 20vh;
    color: white;
    text-align: center;

    display: flex;
    flex-direction: column;
    justify-content: center;
}

header h1,
header p {
    background: rgba(0,0,0,0.5);
    padding: 5px;
}

nav {
    background: #222;
}

nav ul {
    list-style: none;
    display: flex;
}

nav ul li {
    flex: 1;
}

nav ul li a {
    display: block;
    text-align: center;
    padding: 15px;
    color: white;
    text-decoration: none;
}

nav ul li a:hover {
    background: #444;
}

.grid {
    display: grid;
    gap: 10px;
    margin-top: 10px;

    grid-template-areas:
    "nav section"
    "article aside";
    grid-template-columns: 1fr 3fr;
}

.box-nav {
    grid-area: nav;
    background: #18b6b1;
    padding: 20px;
    color: white;
}

.box-section {
    grid-area: section;
    background: #87ceeb;
    padding: 20px;
}

article {
    grid-area: article;
    background: #43a8c4;
    padding: 20px;
    color: white;
}

aside {
    grid-area: aside;
    background: #9fd5f5;
    padding: 20px;
}

.section-images {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.section-images div {
    flex: 1;
    background: white;
    padding: 10px;
    text-align: center;
}

.section-images img {
    width: 100%;
    max-width: 100%;
}

footer {
    margin-top: 10px;
    background: #0d89c5;
    color: white;
    text-align: center;
    padding: 15px;
}

.contact-img {
    width: 200px;
    max-width: 100%;
    border-radius: 10px;
}

.social img {
    height: 10vh;
    margin: 10px;
}


@media (max-width: 600px) {
    body {
        background-color: #f5cc64;
    }

    .grid {
        grid-template-areas:
        "nav"
        "section"
        "article"
        "aside";
        grid-template-columns: 1fr;
    }

    nav ul {
        flex-direction: column;
    }

    .section-images {
        flex-direction: column;
    }
}


@media (min-width: 601px) and (max-width: 900px) {
    body {
        background-color: #64f573;
    }
}


@media (min-width: 901px) {
    body {
        background-color: #7dabf5;
    }
}