@media screen and (max-width: 767px) {

  .contents_main .flex{
    display: block;
  }

.section_pic1{width: 80%; margin: 0 auto;}
.section_pic2 {width: 80%; margin: 0 auto;}
.section_pic3{width: 100%; margin: 0 auto;}
.section_pic4{width: 70%; margin: 0 auto;}
.flex .course_copy{width: 100%;}
.section_pic1.flex {
  display: flex;
  width: 100%;
  margin: -4% 0 2%;
}
.course_copy_sub2 {
  font-size: 18px;
  line-height: 1.5;
  padding: 12px 4px;
  padding-left: 10px;
  margin: 40px auto 20px;
}
.blue{font-size: 1rem;}
.blue.textcenter { text-align: left;}
/* ========================== */	
.priceTbl.table_mt{width: 100%; margin: 0 auto 20px;}
.priceTbl th.subhed {
    text-align: center;
}


/*cases_con*/
.cases_con{padding: 20px 6% 25px; margin-top: 30px !important;}
.cases_con h3{font-size: 22px; margin: 0 auto 25px;}
.cases_con ul{display: block;}
.cases_con ul li{width: 86%; margin: 0 auto 10px;}
.cases_con ul li:nth-child(4n){margin-right: auto;}

/*---category----*/
.sub_main_category {
  font-size: 18px;
  line-height: 1.5;
  padding: 12px 0;
  padding-left: 10px;
  margin: 10px auto 20px;
}
.course_ttl_sub2 {
  font-size: 18px;
  margin: 8px 0;
  text-indent: -1.2em;
  line-height: 1.4;
  padding-left: 1.2em;
}

}