.header_container{
      width: 100%;
    max-width: 1280px;
  padding: 0 40px;
  margin: auto;
}

@media (max-width: 768px) {
  .header_container{
    padding:50px 0 0 ;
  }
}


.header_banner {
  padding: 5px;
  /* margin: 0; */
}

.header_banner a {
  width: 100%;
  display: block;
  padding: 10px 5px;
}

.header_banner img{
  width: 100%;
}


.header_image_row a{
padding: 5px;
 display: block;
  padding: 5px;
}




.video-grid{
  display: flex;
  flex-wrap: wrap;
  padding-bottom: 20px;
  max-width:1080px;
  margin:auto;
}

.video-grid .video-container{
  width: 33.33%;
  padding: 5px;
}

.video-grid .video-container iframe{
  width: 100%;
  aspect-ratio: 16 / 9;
}

@media (max-width: 768px) {
  .video-grid .video-container{
    width: 100%;
    padding: 5px;
  }

}

.header_slide img{
  display: none;
}

#SMPMenu,
#TopContainer{
  display: none;
}

/* Slider */

.header_slide{
  /* max-width: 1500px; */
  margin: 10px auto;
}


.slick-slider img{
    width:100%;
    height: auto;
    display: block;
    /* max-width: 980px; */
    margin: auto;
    left: 0;
    right: 0;
  }
  
  .slick-slider
  {
      position: relative;
  
      display: block;
      box-sizing: border-box;
  
      -webkit-user-select: none;
         -moz-user-select: none;
          -ms-user-select: none;
              user-select: none;
  
      -webkit-touch-callout: none;
      -khtml-user-select: none;
      -ms-touch-action: pan-y;
          touch-action: pan-y;
      -webkit-tap-highlight-color: transparent;
  }
  
  .slick-list
  {
      position: relative;
  
      display: block;
      overflow: hidden;
  
      margin: 0;
      padding: 0;
  }
  .slick-list:focus
  {
      outline: none;
  }
  .slick-list.dragging
  {
      cursor: pointer;
      cursor: hand;
  }
  
  .slick-slider .slick-track,
  .slick-slider .slick-list
  {
      -webkit-transform: translate3d(0, 0, 0);
         -moz-transform: translate3d(0, 0, 0);
          -ms-transform: translate3d(0, 0, 0);
           -o-transform: translate3d(0, 0, 0);
              transform: translate3d(0, 0, 0);
  }
  
  .slick-track
  {
      position: relative;
      top: 0;
      left: 0;
  
      display: block;
      margin-left: auto;
      margin-right: auto;
  }
  .slick-track:before,
  .slick-track:after
  {
      display: table;
  
      content: '';
  }
  .slick-track:after
  {
      clear: both;
  }
  .slick-loading .slick-track
  {
      visibility: hidden;
  }
  
  .slick-slide
  {
      display: none;
      float: left;
      height: 100%;
      min-height: 1px;
  }
  [dir='rtl'] .slick-slide
  {
      float: right;
  }
  .slick-slide img
  {
      display: block;
  }
  .slick-slide.slick-loading img
  {
      display: none;
  }
  .slick-slide.dragging img
  {
      pointer-events: none;
  }
  .slick-initialized .slick-slide
  {
      display: block;
  }
  .slick-loading .slick-slide
  {
      visibility: hidden;
  }
  .slick-vertical .slick-slide
  {
      display: block;
  
      height: auto;
  
      border: 1px solid transparent;
  
  
  
  }
  .slick-arrow.slick-hidden {
      display: none;
  }
  
  
  .slick-next,
  .slick-prev {
    text-indent: -9999px;
    background: none;
    width: 50px;
    height: 80px;
    position: absolute;
    z-index: 100;
    top: calc(50% - 80px);
    display: block!important;
    cursor: pointer;
    border: none;
  }


  .slick-prev {
    left: 1vw;
}

.slick-next{
  right: 1vw;
}



  .slick-next::before,
  .slick-prev::before {
    content: "";
    width: 50px;
    height: 50px;
    position: absolute;
    display: block;
    background-repeat: no-repeat;
    background-size: contain;
    background-position: center;
  }

  
  .slick-prev:before {
    background-image: url(https://ec-otetsudai.com/sekiya/js/arrow_l.png);
    left: 0;
}

  .slick-next:before{
    background-image: url(https://ec-otetsudai.com/sekiya/js/arrow_r.png);
    right: 0;
  }

  @media (max-width: 989px) {
    .slick-next,
    .slick-prev {
      width: 30px;
      height: 30px;
      top: calc(50% - 15px);
    }
    .slick-next::before,
    .slick-prev::before {
      width: 30px;
      height: 30px;
    }
  }

  .slick-dots{
    text-align: center;
    font-size: .85em;
    font-family: Arial;
    font-weight: bold;
    color: #666;
    padding-top: 20px;
    position: absolute;
    bottom: -20px;
    margin: auto;
    left: 0;
    right: 0;
    width: 100px;
    cursor: pointer;
  }
  
  .slick-dots li{
    float: left;
    background: #FFF;
    text-indent: -9999px;
    display: block;
    width: 10px;
    height: 10px;
    margin: 0 5px;
    outline: 0;
    -moz-border-radius: 5px;
    -webkit-border-radius: 5px;
    border-radius: 5px;
    border: 1px solid;
  }
  
  .slick-dots .slick-active{
      background: #1A1A1A;
  }
  

  @media (max-width: 749px) {

    .slick-next,
    .slick-prev {
        display: none!important;
      width: 20px;
      height: 20px;
      top: calc(50% - 20px);
    }
  
    /* .slick-prev {
        left: 0.5rem;
    }
    
    .slick-next{
      right: 0.5rem;
    }

    .slick-next:before, .slick-prev:before {
        width: 20px;
        height: 20px;
    }


    .slick-prev:before {
        transform: rotateZ(45deg);
    }
    
      .slick-next:before{
        transform: rotate(-135deg);
      } */
      .slick-dots{
        bottom: -40px;
      }
  }