.about{
  margin-top:0% ;
}

.about_center{
  width: 40%;
  margin: auto;
  margin-left: 3%;
}


.about_center__contents {
  display: flex;
  margin-bottom: 5%;

}

.about_center_font {
  background-color: rgb(204, 204, 204);
  padding: 1%;
  line-height: 2;
}

.about_center_font2 {
  background-color: #e7e7e7;
  padding: 1%;
  line-height: 2;
}


.top__work_box{
  display: flex;
  width: 100%;
  margin-top: 7%;

}

.top__about_left{
  width: 10%;
  
  margin-left: 3.5%;
  object-fit: cover;
  
}

.top__work_center{
  width: 70%;
  margin: 0;
  margin-left: 3%;
}

.top__work_right{
  width: 20%;
  margin: auto;
  padding: 120px 0;

}


.about_center > h2 {
  font-weight: 700;
  font-size: 3rem;
  font-family: serif;
  text-align: left;
}

.top__work_center-sec01 {
  width: 80%;
  display: grid;
  justify-content: space-between;
}

.top__work_left-sec01 {
  width: 100%;
}

.top__work_left-sec01 img {
  width: 100%;

  object-fit: none;
}

.scroll-box {
  width: 100%;
  overflow: scroll;
  margin-bottom: 5%;
  height: 500px;
  scroll-margin-top: 50px;

}

.scroll-content {
  width: 100%;
  margin: 0 auto;

}

.scroll-box::-webkit-scrollbar {
  background: #c2c2c2;
  width: 5px;
  height: 3px;
}
.scroll-box::-webkit-scrollbar-thumb {
  background-color: rgb(66, 66, 66);
  border: 2px solid rgb(58, 58, 58);
}
.scroll-box::-webkit-scrollbar-thumb:hover {
  background-color: rgb(88, 88, 88);
}

.section_box{
  width: 100%;
  font-size: 100%;
  line-height: 2rem;
  text-align: center;
  

}

.section_style{
  background-color: #333;
  padding: 1%;

  color: #000000; 
  text-decoration: none; 
}

.section_style:hover {
  color: #c4c4c4;
  text-decoration: none;
  border-bottom: 1px solid #ffffff;
}


.work_contents_box{
  display: block;
  margin-bottom: 3%;
  padding: 1% 3%;
  background-color: rgb(214, 214, 214);
}

.work_contents_01 {

}

.work_contents_01_title{
  border-bottom: 3px solid #333;

}

.work_contents_01_title h2 {
  margin: 0;
  scroll-margin-top: 100px;
}

.work_contents_01_explanation {
  border-left: 2px solid #c2c2c2;
  border-bottom: 2px solid #c2c2c2;
  padding: 1% 0%;
  display: flex;
}

.work_contents_01_explanation img{
  padding: 1% 3%;
  width: 15%;
}

.work_contents_01_support{
  border-left: 2px solid #c2c2c2;
  border-bottom: 2px solid #c2c2c2;
  padding: 1% 0%;
}

.work_contents_02 {
  border-left: 2px solid #c2c2c2;
  border-bottom: 2px solid #c2c2c2;
  padding: 1% 0%;
}




@media only screen and (max-width:960px) {
  .top__work_box{
    display: block;
    width: 100%;
    margin: 0;
    margin-left: 10%;
  }
  
  .top__about_left{
    width: 80%;
    margin: 0;
    margin-left: 10%;

  
  }
  .about_center{
    width: 100%;
    margin: 0;
    margin-left: 10%;

  
  }
  
  .about_center__contents{
    width: 100%;
    margin: 0;
    margin-left: 0%;
  
  }
  
  .top__Introduction_right{
    width: 8%;
    margin: 0;
    margin-left: 10%;
  
  }
  
  
  .about_center > h2 {
    font-weight: 700;
    font-size: 3rem;
    font-family: serif;
    text-align: left;
  }
  .top__Introduction_center__contents {
    display: flex;
    justify-content: space-between;
  }
  .top__Introduction_center-sec01 {
    width: 90%;
    display: grid;
    justify-content: space-between;
  }
  
  .top__Introduction_left-sec01 {
    width: 100%;
  }
  
  .top__Introduction_center-sec01_font {
    font-weight: 700;
    font-size: 0.9rem;
    font-family: serif;
    text-align: left;
  }
  
  .top__Introduction_left-sec01 img {
    width: 100%;
    height: 100%;
    object-fit: none;
  }
  
  .scroll-box {
    width: 95%;
    overflow: scroll;
    margin: auto;
  }
  .scroll-content {
    width: 100%;
    height: 70%;
    margin: 0 auto;
    background-color: #f1f1f1;
  }
  
  .scroll-box::-webkit-scrollbar {
    background: #2c2c2c;
    width: 3px;
    height: 3px;
  }
  .scroll-box::-webkit-scrollbar-thumb {
    background-color: rgb(112, 112, 112);
    border: 2px solid rgb(129, 129, 129);
  }
  .scroll-box::-webkit-scrollbar-thumb:hover {
    background-color: rgb(77, 77, 77);
  }
  
}

@media only screen and (max-width:520px) {
  .top__work_box{
    display: inline-block;
    width: 100%;
    margin-top: 7%;
    margin-bottom: 5%;
    margin-left: 0;
  }
  
  .top__about_left{
    width: 100%;
    height: 10%;
    margin: auto;
    margin-left: 0%;
    object-fit: cover;
    padding-top: 15%;

  
  }
  
  .about_center{
    width: 100%;
    margin: auto;
    margin-left: 10%;
  
  }
  
  .top__Introduction_right{
    width: 100%;
    margin: auto;
    padding: 10% 0;
  
  }
  
  
  .about_center > h2 {
    font-weight: 700;
    font-size: 3rem;
    font-family: serif;
    text-align: left;
  }
  .top__Introduction_center__contents {
    display: flex;
    justify-content: space-between;
  }
  .top__Introduction_center-sec01 {
    width: 90%;
    display: grid;
    justify-content: space-between;
  }
  
  .top__Introduction_left-sec01 {
    width: 100%;
  }
  
  .top__Introduction_center-sec01_font {
    font-weight: 700;
    font-size: 0.9rem;
    font-family: serif;
    text-align: left;
  }
  
  .top__Introduction_left-sec01 img {
    width: 100%;
    height: 100%;
    object-fit: none;
  }
  
  .scroll-box {
    width: 95%;
    overflow: scroll;
    margin: auto;
  }
  .scroll-content {
    width: 100%;
    height: 70%;
    margin: 0 auto;
    background-color: #f1f1f1;
  }
  
  .scroll-box::-webkit-scrollbar {
    background: #2c2c2c;
    width: 3px;
    height: 3px;
  }
  .scroll-box::-webkit-scrollbar-thumb {
    background-color: rgb(112, 112, 112);
    border: 2px solid rgb(129, 129, 129);
  }
  .scroll-box::-webkit-scrollbar-thumb:hover {
    background-color: rgb(77, 77, 77);
  }
}