body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    background-color: #fff;
    color: #dddddd;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: #fff;
    color: #004488;
    display: flex;
    align-items: center;
    margin-left: 30px;
    padding: 1em;
    box-sizing: border-box;
}

header img {
    margin-left: 30px;
}

header h1 {
    margin-left: 30px;
    font-size: 1.8em;
}

.main-content {
    text-align: center;
    flex: 1;
    padding: 2em;
}

.photo-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(3, auto);
    gap: 1em;
}

.photo-grid div {
    background-color: #444;
    padding: 1em;
    border: 0px solid #fff;
}

footer {
    background-color: #fff;
    color: #004488;
    text-align: center;
    padding: 1em;
    margin-top: auto;
    width: 100%;
    box-sizing: border-box;
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: center;
        /* padding: 0.5em; */
    }

    header h1 {
        font-size: 1.5em;
    }

    .photo-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .main-content {
        padding: 1em;
    }
}

@media (max-width: 480px) {
    header {
        flex-direction: column;
        align-items: center;
    }

    header img {
        margin-left: 50px;
        /* margin-right: 0;
        margin-bottom: 0.5em; */
    }

    .photo-grid {
        grid-template-columns: 1fr;
    }
}