*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: arial, sans-serif;
}
body {
    background: #333;
}

.gallery-container {
    width: 100%;
    height: 100 vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 50px 8%;
}
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    grid-gap: 30px;
}
.gallery img {
    width: 100%;
    border:2px solid #666666;
    border-radius:15px;
    box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.4);
}
.gallery img:hover {
    border:3px solid #161616;
    opacity: 0.8;
}