#meau>li:nth-child(4)>a{
    color: #039dff;
    border-bottom: 5px solid #039dff;
}
section{
    min-height: 1200px;
    background: #f1f1f1;
}
div.img{
    height: 280px;
    background: url('../images/3-11.png') top center no-repeat;
}