a{color: red;}
    #container{width: 1000px;background-color: aqua; margin: auto;}
    #menu ul{list-style-type: none;}
    #menu>ul>li{display: inline-block;width: 70px;}
    #menu ul li a{text-decoration: none;}
    #content{background-color: blueviolet;}
    #content ul{list-style-type: none}
    #content ul li{display: inline-block;}
    #content li.product{ width: 180px;height: 200px; margin: 5px;background-color:aqua; border-radius: 30px; padding: 20px;}
    #content .product:hover{background-color:palevioletred;}