/** 关于 */
 
.scd_m .show_met_11_1_126 iframe {width: 460px;height: 286px;border: 0px solid green;}  

@media screen and (max-width: 480px){
  .scd_m .show_met_11_1_126 iframe {width: 460px;height: 286px;border: 0px solid green;}  
}
/*小屏幕*/
@media screen and (min-width: 770px){
   .scd_m .show_met_11_1_126 iframe {width: 100%;height: 306px;border: 0px solid green;}  
}
 
/*大屏幕*/
@media screen and (min-width: 980px){
   .scd_m .show_met_11_1_126 iframe {width: 700px;height: 346px;border: 0px solid green;}  

}
/*超大屏幕*/
@media screen and (min-width: 1130px) {
   .scd_m .show_met_11_1_126 iframe {width: 800px;height: 446px;border: 0px solid green;}  

}