body {
    min-height: 100vh;
    background-color: hsl(0, 0%, 14%);
    color:hsl(0, 0%, 70%);
}

body::-webkit-scrollbar {
    display: none;
}

.container {
    max-width: 800px;
    margin: auto;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.pictures {
    display: grid;
    height: 100%;
    grid-template-columns: repeat( 2, 1fr );
    grid-auto-rows: 200px;
    gap: 20px;
}


@media screen and (min-width: 1000px) {
    .pictures:hover img:not(:hover) {
        filter: grayscale(1) blur(3px);
        opacity: 0.5;
    }

    .pictures {
        grid-template-columns: repeat(4, 1fr);
    }
}


.pictures img {
    transition: all 0.2s ease-in-out;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    box-shadow: 0 0 2px hsl(0, 0%, 70%);

    background: linear-gradient(90deg, hsl(0, 0%, 30%), hsl(0, 0%, 50%), hsl(0, 0%, 30%));
    background-size: 600% 100%;
    animation: gradient 1s ease infinite;
    animation-direction: alternate;
}

@keyframes gradient {
    0% {background-position: 0%}
    100% {background-position: 100%}
}

a {
    color: inherit;
    text-decoration: none;
    color: white;
}

a:hover {
    text-decoration: underline;
}