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

body{
    background-color: rgb(234, 240, 240);
}

header{
    background-color: #29272b;
    color: rgb(249, 244, 244);
    padding: 16px;
    text-align: center;
}

nav{
    display: flex;
    justify-content: center;
    background-color: #848383;
    padding: 0px;
}

nav a{
    color: #f8f803;
    margin-right: 16px;
    text-decoration: none;
}

nav a:hover{
    color: rgb(224, 2, 2);
}

ul{
    list-style-type: none;
}

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

.submenu{
    display: none;
    position: absolute;
    background-image: linear-gradient(to right, rgb(24, 22, 22), rgb(229, 213, 213));
}

.menu li:hover .submenu{
    display: block;
}
.submenu li{
    border: 1px dotted rgb(251, 247, 245);
}
/* 
bd sung
@media (max-width:900px) {

}*/
.products{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    padding: 30px;
}
.product h3{
    min-height:50px;
}
.product{
    background-color: rgb(246, 248, 247);
    border-radius: 10px;
    padding: 16px;
    box-shadow: 0 0 10px #a39797;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;

}
.product button{
    background: #28a745;
    color: white;
    border: none;
    padding: 6px 10px;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
}

.product button:hover{
    background: #1e7e34;
}

.product img{
    width: 100px;
    height: 100px;
}