.mv_slide {
  margin: 0 auto;
  width: 100%;
}
.slider-img img {
  width: 100%;
}
.slide-arrow {
  bottom: 0;
  margin: auto;
  position: absolute;
  top: 0;
  z-index: 1;
}

img.slide-arrow{
    width: 84px;
    height: 84px;

}
.prev-arrow {
  left: calc(25%);
}
.next-arrow {
  right: calc(25%);
}
.slide_in img{
    width: 100%;
}
/*mask*/
.item {
  -webkit-mask-image: url('../../common/images/top/head-mask.png');
  mask-image: url('../../common/images/top/head-mask.png');
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-size: cover;
  mask-size: cover;
}
#top_about{
	position: relative;
	background-image: url(../../common/images/top/top_bg01.png);
	background-repeat: repeat-x;
	background-size: contain;
  background-position: center center;
  padding: 150px 0;
}
#top_about .flex_box{
  max-width: 1010px;
  margin: 0 auto;
  align-items: center;
}
#top_about .flex_box .box_l{
  width: 40%;
}
#top_about .flex_box .box_l img{
  width: 100%;
}
#top_about .flex_box .box_r{
  width: 60%;
  box-sizing: border-box;
  padding: 0 0 0 15%;
}
#top_about .flex_box .box_r .a_txt{
  font-size: 1.3em;
  line-height: 2;
  letter-spacing: 0.1em;
  margin-bottom: 60px;
}
#top_content{
  margin-top: 85px;
}
#top_content .t_news{
  max-width: 1200px;
  margin: 0 auto 120px;
}
#top_content .flex_box.box50{
  max-width: 1200px;
  margin: 0 auto 120px;
}
#top_content .flex_box.box50 .box_l,
#top_content .flex_box.box50 .box_r{
  width: 48%;
}
#top_content .flex_box.box50 .box_l{
  margin-right: 4%;
}
.flex_box .boxS{
  width: 100%;
}
.flex_box .boxS .box_l{
  width: 40%!important;
  margin-right: 5%!important;
}
.flex_box .boxS .box_l img{
  width: 100%;
}
.flex_box .boxS .box_r{
  width: 55%!important;
  padding: 0 50px 0 0;
}
.flex_box .boxS .a_txt{
  text-align: justify;
  font-size: 1.1em;
  margin-bottom: 50px;
}
@media screen and (max-width: 1200px) {
.next-arrow{
  right: 15%;
}
.prev-arrow{
  left: 15%;
}
#top_content{
    width: 95%;
    margin: 0 auto;
}
}
@media screen and (max-width: 960px) {
.next-arrow{
  right: 10%;
}
.prev-arrow{
  left: 10%;
}
.flex_box .boxS .box_r{
  padding: 0;
}
}
@media screen and (max-width: 820px) {
.next-arrow{
  right: 20px;
}
.prev-arrow{
  left: 20px;
}
img.slide-arrow{
  width: 60px;
  height: 60px;
}
}
@media screen and (max-width: 768px) {
.news_box .box_in{
  width: 48%;
  margin-right: 4%;
  margin-bottom: 4%;
}
.news_box .box_in:nth-child(2n){
  margin-right: 0;
}
#top_content .flex_box.box50 .box_l, #top_content .flex_box.box50 .box_r{
  width: 100%;
  margin-right: 0;
}
#top_content .flex_box.box50 .box_l{
  margin-bottom: 30px;
}
}
@media screen and (max-width: 600px) {
#top_about .flex_box .box_l{
  order: 2;
  display: none;
}
#top_about .flex_box .box_r{
  order: 1;
  width: 100%;
  margin-right: 0;
  padding-left: 0;
  text-align: center;
}
#top_about .flex_box .box_r .a_txt{
  margin-bottom: 30px;
}
img.slide-arrow{
  width: 45px;
  height: 45px;
}

}