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

#container{
    width:1000px;
    margin:auto;
}

/* HEADER */
#header{
    height:120px;
    background:#efe6c9;
}

/* MENU */
#menu{
    height:40px;
    background:linear-gradient(to right,#00c6c6,#00a8a8);
}

/* CONTENT */
#content{
    padding:20px;
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
}

/* SAN PHAM */
.sp{
    width:30%;
    border:2px solid #444;
    border-radius:12px;
    padding:15px;
    margin-bottom:20px;
    background:#f9f9f9;
}

.sp h1{
    font-size:22px;
    margin-bottom:10px;
}

.sp p{
    font-size:14px;
    line-height:1.5;
    text-align:justify;
}