.teachers-grid {
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
}

.teacher-card {
    background:#fff;
    padding:20px;
    border-radius:12px;
    border-top:4px solid #164b8a;
    text-align:center;
}

.teacher-card h3 {
    color:#164b8a;
}

@media(max-width:900px){
    .teachers-grid {
        grid-template-columns:repeat(2,1fr);
    }
}

@media(max-width:600px){
    .teachers-grid {
        grid-template-columns:1fr;
    }
}