body {
    background-image:url(../img/gallery/gallery_background.jpg);
    background-size: cover;
}

* {
    margin: 0;
    padding: 0;
    box-shadow: border-box;
    font-family: 'poppins', sans-serif;
}

.container { 
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 50px 5%;
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    grid-gap: 25px;
}

.gallery img {
    width: 100%;
}

.img-header-bg {
    background-color: firebrick;
}