header {
    width: 100%;
    height: 150px;
    text-align: center;
}

html {
    font-family: Merriweather;
}

.gallery {
    display: grid;
    gap: 10px;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}
.gallery img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}