BILLIONHATS 6 Pack Men’s Solid Colors Cotton T-Shirts Short Sleeve Lightweight

This is a complete, ready-to-use HTML product description for the BILLIONHATS t-shirt pack. It includes Schema.org markup for SEO, a structured layout with an image gallery, specifications, a “Why Buy” section, and an FAQ, all styled for a clean, professional look.
“`html

* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
background: #f4f6f9;
font-family: ‘Segoe UI’, Roboto, Helvetica, Arial, sans-serif;
line-height: 1.5;
color: #1e1e1e;
padding: 20px;
}
.product-card {
max-width: 1200px;
margin: 0 auto;
background: white;
border-radius: 24px;
box-shadow: 0 12px 30px rgba(0,0,0,0.08);
overflow: hidden;
padding: 30px 30px 40px;
}
/* image gallery */
.gallery {
display: flex;
flex-wrap: wrap;
gap: 16px;
margin-bottom: 30px;
justify-content: center;
}
.gallery img {
max-width: 100%;
height: auto;
border-radius: 16px;
box-shadow: 0 4px 12px rgba(0,0,0,0.05);
transition: transform 0.2s ease;
object-fit: cover;
width: 100%;
}
.gallery-item {
flex: 1 1 180px;
min-width: 140px;
}
.gallery-item img {
width: 100%;
height: 200px;
object-fit: cover;
border-radius: 16px;
}
.gallery-main {
flex: 2 1 360px;
}
.gallery-main img {
height: 320px;
object-fit: cover;
}
@media (max-width: 600px) {
.gallery-item {
flex: 1 1 45%;
}
.gallery-main img {