.ns_bgm { background-color: #021A3E;}
.ns_nei_div { width: 1400px; background-image: url("boy_bg.jpg"); height: 3949px; margin: 0 auto;}
.ns_f_link { width: 1200px; margin: 440px auto 0 auto; text-align: center;}
.ns_f_link .link_a { display: block; width: 140px; height:42px; margin: 0 auto;}
.ns_one { width: 1200px; margin: 240px auto 0 auto; font-size: 16px; color: #07e1da; line-height: 240%; text-align: center;}
.ns_tow { width: 1200px; margin: 50px auto 0 auto;}
.ns_tow .ns_tow_img { float: left; width: 345px; height: 231px; margin-right: 42px;}
.ns_img_a { width: 1200px; margin: 30px auto; text-align: center;}

.ns_three { width: 1200px; margin: 140px auto 0 auto; font-size: 16px; color: #07e1da; line-height: 240%; text-align: center;}
.ns_four { width: 1200px; text-align: center; margin: 20px auto;}

.ns_five { width: 1200px; margin: 140px auto 0 auto; font-size: 16px; color: #07e1da; line-height: 240%; text-align: center;}
.ns_six { width: 1200px; margin: 180px auto 0 auto; font-size: 16px; color: #07e1da; line-height: 240%; text-align: center;}