.bg-grid {
    background-image: linear-gradient(to right, rgba(255,255,255,0.05) 1px, transparent 1px),
                    linear-gradient(to bottom, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 24px 24px;
}
.shine {
    position: relative;
    overflow: hidden;
}
.shine:after {
    content: '';
    position: absolute; inset: 0; translate: -100% 0;
    background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,.08) 50%, transparent 70%);
    animation: shine 4s infinite;
}
@keyframes shine { 0% { translate: -120% 0 } 60% { translate: 120% 0 } 100% { translate: 120% 0 } }