*{
margin:0;
padding:0;
box-sizing:border-box;
font-family:Arial,sans-serif;
}

body{
background:#f4f4f4;
}

header{
background:#111;
color:white;
padding:20px;
display:flex;
justify-content:space-between;
align-items:center;
}

nav a{
color:white;
margin-left:20px;
text-decoration:none;
}

.hero{
height:70vh;
display:flex;
flex-direction:column;
justify-content:center;
align-items:center;
text-align:center;
background:white;
}

.hero h1{
font-size:48px;
margin-bottom:20px;
}

.btn{
padding:12px 25px;
background:#007bff;
color:white;
text-decoration:none;
border-radius:5px;
}

#product{
padding:60px 20px;
display:flex;
justify-content:center;
}

.product-card{
width:400px;
background:white;
padding:20px;
border-radius:10px;
box-shadow:0 5px 15px rgba(0,0,0,.1);
}

.product-card img{
width:100%;
border-radius:10px;
}

.price{
font-size:24px;
color:green;
margin:10px 0;
}

form{
margin-top:20px;
}

form input{
width:100%;
padding:10px;
margin-bottom:10px;
}

button{
width:100%;
padding:12px;
background:#007bff;
color:white;
border:none;
cursor:pointer;
}

#about,
#contact{
padding:60px 20px;
text-align:center;
background:white;
margin-top:20px;
}

footer{
background:#111;
color:white;
text-align:center;
padding:20px;
margin-top:20px;
}