* {
    box-sizing: border-box;
}

body {
    font-size: 20px;
    max-width: 1280px;
    margin: auto;
    padding: 1em;
}

img {
    max-width: 100%;
    display: block;
}

header {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.main-nav {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
}

.main-nav a {
    text-decoration: underline;
    color: #00f;
}

.media-card {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    align-items: flex-start;
}

.media-card-image {
    width: 100%;
}

.media-card-content h3 {
    margin: 0 0 0.25rem 0;
}

.media-card-content p {
    margin: 0;
}

.gallery {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

hr {
    margin-top: 50px;
}

@media (min-width: 700px) {
    header {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }

    .media-card-container .media-card {
        flex-direction: row;
        align-items: flex-start;
        gap: 1.25rem;
    }

    .media-card-container .media-card-image {
        flex: 0 0 420px;
        max-width: 420px;
    }

    .gallery {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 1.5rem;
    }

    .gallery .media-card {
        flex: 1 1 calc(50% - 1.5rem);
        flex-direction: row;
        align-items: flex-start;
        gap: 1rem;
    }

    .gallery .media-card-image {
        flex: 0 0 140px;
        max-width: 140px;
    }
}