.pe-container{
    max-width:1000px;
    margin:auto;
    padding:20px;
}

.pe-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:20px;
}

.pe-card{
    background:#fff;
    border:1px solid #ddd;
    padding:20px;
    border-radius:10px;
}

.pe-box{
    margin-top:20px;
    padding:15px;
    background:#f5f5f5;
    border-radius:8px;
}

.pe-practice{
    max-width:700px;
    margin:auto;
    padding:30px;
}