:root {
    --accent: #2563eb
}

* {
    box-sizing: border-box
}

body {
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
    line-height: 1.4;
    margin: 0;
    color: #111
}

.center {
    min-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center
}

button {
    background: var(--accent);
    color: white;
    padding: .6rem 1rem;
    border: 0;
    border-radius: 8px;
    cursor: pointer
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: #f6f8fb
}

.container {
    padding: 2rem
}

#gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1rem;
    margin-top: 1rem
}

.thumb {
    border-radius: 8px;
    overflow: hidden
}

.thumb img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    display: block
}


footer {
    text-align: center;
}