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

body{
    background-color:azure;
}

header{
    background-color:#222222;
    color:#ffffff;
    padding:16px;
    text-align:center;
}

nav{
    display:flex;
    justify-content:center;
    background-color:#555555;
    padding:10px;
}

nav a{
    color:yellow;
    text-decoration:none;
    margin:0 16px;
}

nav a:hover{
    color:red;
}

ul{
    list-style-type:none;
}

ul li{
    display:inline-block;
    width:150px;
    position:relative;
}

.submenu{
    display:none;
    position:absolute;
    background-image:linear-gradient(to right,black,white);
}

.submenu li{
    padding-top:2px;
    padding-bottom:2px;
    border:1px dotted white;
}

.menu li:hover .submenu{
    display:block;
}

.products{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
    padding:30px;
}

.product{
    background-color:white;
    border-radius:8px;
    padding:16px;
    box-shadow:0 0 10px rgba(0,0,0,0.1);
    display:flex;
    flex-direction:column;
    align-items:center;
}

.product img{
    width:100px;
    height:100px;
    border-radius:4px;
}
.product h3{
    margin-top:10px;
    font-size:20px;
    text-align:center;
}

.product p{
    margin:10px 0;
    color:red;
    font-weight:bold;
}

.product button{
    padding:10px 20px;
    border:none;
    border-radius:5px;
    background:#28a745;
    color:white;
    cursor:pointer;
}

.product button:hover{
    background:#1d7a33;
}

footer{
    background:#222;
    color:white;
    text-align:center;
    padding:20px;
    margin-top:20px;
}