.yoon_bi_section1 {position:relative; width: 1920px; height: 930px; background:url(http://www.miral.org/upload/newdesign/20191127/miral_yoonbi_img1.jpg) 0 0 no-repeat;  }
.yoon_bi_section2 {position:relative; width: 1920px; height: 1292px; background:url(http://www.miral.org/upload/newdesign/20191127/miral_yoonbi_img2.jpg) 0 0 no-repeat;  }
.yoon_bi_section2 iframe {width: 1000px; height: 590px; position:absolute; left:460px; top:293px; }
.yoon_bi_section3 {position:relative; width: 1920px; height: 846px; background:url(http://www.miral.org/upload/newdesign/20191127/miral_yoonbi_img3_1.jpg) 0 0 no-repeat;  }
.yoon_bi_section3 .yoon_bi_section3_bg {display:none; position:absolute; left:0px; top:0px; width: 1920px; height: 846px; background:url(http://www.miral.org/upload/newdesign/20191127/miral_yoonbi_img3_2.jpg) 0 0 no-repeat;}
.yoon_bi_section3 .btn_before {width: 113px; height: 57px; display:inline-block; position:absolute; left:1060px; top:660px; background:url(http://www.miral.org/upload/newdesign/20191127/miral_yoonbi_tab1_off.png) 0 0 no-repeat;}
.yoon_bi_section3 .btn_before.on {background:url(http://www.miral.org/upload/newdesign/20191127/miral_yoonbi_tab1_on.png) 0 0 no-repeat;}
.yoon_bi_section3 .btn_after {width: 113px; height: 57px; display:inline-block; position:absolute; left:1300px; top:660px; background:url(http://www.miral.org/upload/newdesign/20191127/miral_yoonbi_tab2_off.png) 0 0 no-repeat;}
.yoon_bi_section3 .btn_after.on {background:url(http://www.miral.org/upload/newdesign/20191127/miral_yoonbi_tab2_on.png) 0 0 no-repeat;}
.yoon_bi_section4 {position:relative; width: 1920px; height: 697px; background:url(http://www.miral.org/upload/newdesign/20191127/miral_yoonbi_img4.jpg) 0 0 no-repeat;  }
.yoon_bi_section5 {position:relative; width: 1920px; height: 800px; background:url(http://www.miral.org/upload/newdesign/20191127/miral_yoonbi_img5.jpg) 0 0 no-repeat;  }
.yoon_bi_section5 .btn_support {position:absolute; left:1065px; top:472px; display:inline-block; width: 506px; height: 120px; }
.yoon_bi_section6 {position:relative; width: 1920px; height: 803px; background:url(http://www.miral.org/upload/newdesign/20191127/miral_yoonbi_img6.jpg) 0 0 no-repeat;  }
.yoon_bi_section7 {position:relative; width: 1920px; height: 990px; background:url(http://www.miral.org/upload/newdesign/20191127/miral_yoonbi_img7.jpg) 0 0 no-repeat;  }
.yoon_bi_section7 .btn_support {position:absolute; left:1046px; top:770px; display:inline-block; width: 506px; height: 120px; }
.yoon_bi_section8 {position:relative; width: 1920px; height: 823px; background:url(http://www.miral.org/upload/newdesign/20191127/miral_yoonbi_img8.jpg) 0 0 no-repeat;  }
.yoon_bi_section8 .btn_support {position:absolute; left:955px; top:550px; display:inline-block; width: 570px; height: 120px; }