.sub_intro {
    width:100%;
    /*max-width:1920px;*/
    min-width:1600px;
    height:440px;
    background-position:center center;
    background-size:cover;
}

h1 {
    font-size:48px;
    text-align:center;
    margin:0px;
}

h2 {
    font-size: 36px;
    text-align: center;
    margin: 60px 0px 25px;
}