Bản mẫu:BKTT:Quyển/styles.css
.section {
box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
border: 1px solid #E0E0E0;
border-radius: 3px;
display: flex;
flex-wrap: wrap;
padding: 0 20px;
background-color: white;
}
.section-title {
font-size: 24px;
font-weight: bold;
padding: 20px 0;
}
.group {
flex: 0 0 calc(50% - 10px);
}