a{color: blueviolet;}
#container{background-color: bisque;
    width: 1000px;
    margin: auto;}
/* Khoi menu*/
#menu{ background-color: cornflowerblue;}
#menu ul{ list-style-type: none;}
#menu ul li{ display: inline-block; width: 100px; font-weight: bold;}
/* end menu  */
#content ul{list-style-type: none;}
#content li.item{
    width: 250px; height: 200px; border: solid;
    margin: 3px;
    border-radius: 30px;
    padding: 20px;
    display: inline-block;
}
.item:hover{background-color: chocolate;}