*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

body{
  font-family:Arial, sans-serif;
  background:#f4f6f8;
  color:#1a1a1a;
}

.container{
  width:90%;
  max-width:1100px;
  margin:auto;
}

header{
  background:#0A2540;
  padding:20px 0;
  color:white;
}

header h1{
  margin-bottom:10px;
}

nav a{
  color:white;
  margin-right:15px;
  text-decoration:none;
  font-weight:bold;
}

.hero{
  padding:60px 0;
  text-align:center;
  background:white;
}

.destaque{
  padding:40px 0;
}

.card{
  display:inline-block;
  background:white;
  padding:20px 30px;
  border-radius:10px;
  box-shadow:0 5px 15px rgba(0,0,0,0.1);
  text-decoration:none;
  color:#000;
  margin-top:20px;
}

footer{
  margin-top:50px;
  padding:20px 0;
  background:#0A2540;
  color:white;
  text-align:center;
}
.imagem-produto{
  width:100%;
  max-width:500px;
  display:block;
  margin:20px auto;
  border-radius:12px;
}
.galeria{
  text-align:center;
  margin:30px 0;
}

.imagem-principal{
  width:100%;
  max-width:500px;
  border-radius:12px;
  margin-bottom:15px;
}

.miniaturas{
  display:flex;
  justify-content:center;
  gap:10px;
  flex-wrap:wrap;
}

.miniaturas img{
  width:100px;
  height:auto;
  border-radius:8px;
  cursor:pointer;
  transition:0.3s;
}

.miniaturas img:hover{
  transform:scale(1.1);
}
<style>
.galeria{
  text-align:center;
  margin:30px 0;
}

.imagem-principal{
  width:100%;
  max-width:500px;
  border-radius:12px;
  margin-bottom:15px;
}

.miniaturas{
  display:flex;
  justify-content:center;
  gap:10px;
  flex-wrap:wrap;
}

.miniaturas img{
  width:90px;
  border-radius:8px;
  cursor:pointer;
  opacity:0.7;
  border:2px solid transparent;
}

.miniaturas img.ativa{
  opacity:1;
  border:2px solid #0A2540;
}
</style>