body{
    margin:0;
    font-family:Arial;
    background:#0d0d0d;
    color:white;
}

header{
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:15px 30px;
    background:linear-gradient(90deg,#1a001a,#330033);
}

.logo{
    font-size:5px;
    font-weight:bold;
    color:#cc66ff;
}

.search-box input{
    padding:8px;
    width:250px;
    border-radius:20px;
    border:none;
}

.cart-icon{
    cursor:pointer;
    font-size:18px;
}

.products{
    display:grid;
    grid-template-columns:repeat(auto-fill,minmax(220px,1fr));
    gap:20px;
    padding:30px;
}

.product{
    background:#1a001a;
    padding:15px;
    border-radius:15px;
    text-align:center;
    transition:0.3s;
}

.product:hover{
    transform:scale(1.05);
}

.product img{
    width:100%;
    height:180px;
    object-fit:cover;
    border-radius:10px;
}

.product button{
    background:#9900cc;
    border:none;
    padding:8px 15px;
    margin-top:10px;
    color:white;
    cursor:pointer;
    border-radius:8px;
}

.cart-panel{
    position:fixed;
    right:-350px;
    top:0;
    width:300px;
    height:100%;
    background:#111;
    padding:20px;
    transition:0.4s;
    overflow:auto;
}

.cart-panel.active{
    right:0;
}

.whatsapp{
    background:green;
    width:100%;
    padding:10px;
    margin-top:10px;
    border:none;
    color:white;
}

.moncash{
    background:#cc66ff;
    width:100%;
    padding:10px;
    margin-top:10px;
    border:none;
    color:white;
}
<input type="file" id="pimage" accept="image/*">
header{
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:15px 40px;
    background:#111; /* nwa fonse */
    color:white;
    position:relative;
}

..logo{
    display:flex;
    align-items:center;
}

.logo img{
    height:55px;   /* ajiste gwosè isit */
    width:auto;
}
}

nav{
    display:flex;
    gap:25px;
    margin-right:0; /* pouse li nan kwen dwat */
}

nav a{
    color:white;
    text-decoration:none;
    font-size:15px;
    font-weight:500;
    transition:0.3s;
    padding:5px 10px;
    border-radius:5px;
}

nav a:hover{
    background:gold;
    color:black;
}

.menu-toggle{
    display:none;
    font-size:26px;
    cursor:pointer;
    color:gold;
}

/* MOBILE */
@media(max-width:768px){

    nav{
        display:none;
        flex-direction:column;
        background:#111;
        position:absolute;
        top:60px;
        right:0; /* kole ak kwen */
        width:220px;
        padding:20px;
    }

    nav.active{
        display:flex;
    }

    nav a{
        padding:10px 0;
        border-bottom:1px solid #333;
    }

    .menu-toggle{
        display:block;
    }
}
#address{
    background:#111;       /* background nwa fonse */
    color:rgb(0, 0, 0);            /* tèks an gold */
    padding:50px 20px;
    text-align:center;
}

#address h2{
    font-size:28px;
    margin-bottom:10px;
}

#address p{
    font-size:18px;
}