@charset "utf-8";
/* ================================================================= 
 License : e-TRUST Inc.
 File name : style.css
 Style : style
================================================================= */

.youtube_st {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}

@media only screen and (max-width: 768px) {
  .youtube_st {
    display: block;
  }
}

.youtube_st .box {
  width: 32%;
  margin-right: 2%;
  margin-bottom: 15px;
}

@media only screen and (max-width: 768px) {
  .youtube_st .box {
    width: 100%;
    margin-right: 0;
  }
}

.youtube_st .box:nth-of-type(3n) {
  margin-right: 0;
}

.youtube_st .box iframe {
  height: 15vw !important;
  min-height: 280px;
}

@media only screen and (max-width: 1200px) {
  .youtube_st .box iframe {
    height: 24vw !important;
    min-height: 230px;
  }
}

@media only screen and (max-width: 1000px) {
  .youtube_st .box iframe {
    min-height: 190px;
  }
}

@media screen and (min-width: 469px) and (max-width: 768px) {
  .youtube_st .box iframe {
    height: 71vw !important;
    min-height: 230px;
  }
}

@media only screen and (max-width: 468px) {
  .youtube_st .box iframe {
    height: 72vw !important;
  }
}
/*================== ○○○○.html =================*/
@media screen and (min-width: 469px) and (max-width: 768px){
}
@media only screen and (max-width: 468px){
}