.body_background {
        background-image: linear-gradient(0deg, transparent calc(100% - 1px), #a9a9a9 calc(100% - 1px)),linear-gradient(90deg, transparent calc(100% - 1px), #a9a9a9 calc(100% - 1px));
        background-size: 25px 25px;
        background-repeat: repeat;
        background-position: center center;
    }
    
    .header {
        display: grid;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 3em;  
        background: black;
        z-index: 3;
    }
    
    .container {
        display: flex;     
        justify-content: space-between;
        margin: auto 1em;
    }
    
    .hamburger {   
        margin: 0.25em;   
        width: 2.5em;
        height: auto;
        cursor: pointer;
    }

    .gamboo_logo {
        cursor: pointer;
        margin: 0.4em;  
        height: 2.0em;
        width: auto;
    }
 
    .menu_off {
        margin-top: 10vw;
        background: black;
        position: fixed;
        inset: 0; 
        opacity: 0%;
        height: 0;
        overflow: hidden;
        transition: 0.5s;
    }

    .menu_on {
        background: black;
        position: fixed;
        inset: 0; 
        opacity: 100%;
        transition: 0.3s;
        z-index: 2;
    }
    
    .menu_on div {
        margin-top: 10em;
        text-align: center;
    }

    .menu_on div a {
        text-decoration: none; 
    }
    
    .menu_on div p {
        font-size: 150%;
        font-weight: bold;
        line-height: 1.5em;
        color: white; 
    }
  
    .wrapper {     
        background: white;
        max-width: 60em;
        height: auto;
        margin: -3.5em auto;
        padding-top: 3em;
        padding-bottom: 7.5em;
    }

    .major_compartment {
        height: 0.25em;
        width: 45em;
        border: none;
        background-color: #a9a9a9;
        margin: 1em auto;
    }
    
    .main_title_logo {
        display: flex;
        align-content: center;
        justify-content: center;
        padding-top: 5em; /*ヘッダー分*/
    }

    .main_title_logo img {
        width: auto;
        height: 175.5px;
    }

    .major_section_title {
        display: flex;
        align-content: left;
        justify-content: left;     
    }

    .major_section_title img {
        opacity: 30%;
        height: 3em;
        width: auto;
        margin-left: 7em;
        margin-top: 0em;
        margin-bottom: 3em;      
    }
       
    .index_content_outline {
        display: flex;
        align-content: left;
        justify-content: left;
        margin-bottom: 25px;
        max-width: 11em;
        width: 11em;
        margin-right:7.5em;
    }

    .index_content_outline img {
        width: auto;
        height: 35px;
    }

    @keyframes myblink {
        0% {
            opacity: 0;
        }
        100% {
            opacity: 85%;
        }
       }
    
        .index_content_new_icon {
         display: grid;
         position: absolute;
         place-items: center;
         background:#F43182;
         width:4rem;
         height:2rem;
         border-radius:12.5px;
         -webkit-animation: myblink 1.5s ease-in-out infinite alternate;
         z-index: 2;
         margin-left: -30px;
         margin-top: -15px; 
        }
       
        .index_content_new_icon p {
         color: white;
         font-weight: bold;
         font-size: 110%;
         text-align:center;
         align-items: center;
         inset: 0;
         margin: 0;
        }
    
    
    .index_content {
         display: flex;
         align-items: center;
         flex-direction: column;
         text-align: left;
         position: relative;
         margin-top: -20px;
         margin-bottom: 10px;   
         font-size: 30px;
         color: black;
    }
    
    .index_content_icon {
         opacity: 20%;
         width: auto;
         height: 5.5em;
         margin-top: 20px;
  } 

    .index_content p {
         position: absolute;
         margin-bottom: 0.5em;
         max-width: 11em;
         width: 11em;
         line-height: 1.5em;
         font-weight: bold;
         font-size: 0.9em;
         text-decoration: underline;
  }
  
  .index_content_transaction {
        display: flex;
        justify-content: center;
        text-align: center;
        margin-top: 1em;
        margin-bottom: 1em;
        cursor: pointer;
  }
  
  
  .index_content_transaction div {
         border: none;
         border-radius: 10px;
         background: black;
         width: 16.5em;
         height: 3.5em;  
         margin: 1.3em 0.5em;
  }
  
    .index_content_transaction div p {
         color: white;
         font-weight: bold;
         font-size: 1.5em;
         margin: 0.5em auto;
  }

  .index_content_transaction div a {
         text-decoration: underline;
         color: inherit;
  }


    .index_pc_sorting {
        display:flex;
        flex-direction: row;
        justify-content: space-between;
        margin: auto 7.5em;
    }

    .update {
        margin: -1em 9em 2em;
    }

    .update li {
        font-weight:bold;
        font-size: 115%;
        display:inline-block;
        margin: auto 1em;
    }

    .update li a {
        text-decoration: underline;
        color: inherit;
    }

    .about_detail {
        display:flex;
        justify-content: center;
        margin-top: -0.5em;
        margin-bottom: 2.5em;
    }

    .about_detail div {
        border: solid 0.2em #a9a9a9;
        border-radius: 20px;
        text-align: left;
        padding: 1.5em;
    }

    .about_detail p {
        max-width: 30em;
        width: 30em;
        font-size: 135%;
    }

    .about_doctor_section {
        display: flex;
        justify-content: center;
        text-align: center;
    }

    .doctor_image_section {
        flex-direction: column;
    }

    .doctor_image_section p {
        max-width: 15em;
        width: 15em;
        font-weight: bold;
        font-size: 75%;
        line-height:0.5em;
    }

    .balloon {
        position: relative;
        display: inline-block;
        padding: 2.5em;
        color: black;
        font-size: 115%;
        background: #FFF;
        border: solid 3px #a9a9a9;
        border-radius: 10px;
        max-width: 22.5em;
        width: 22.5em;
        height: 1.5em;
        text-align: center;
      }
      
      .balloon:before {
        content: "";
        position: absolute;
        right: -2.2em;
        top: 1.5em;
        border: 0.9em solid transparent;
        border-left: 1.7em solid #FFF;
        z-index: 2;
      }
      
      
      .balloon:after {
        content: "";
        position: absolute;
        right: -2.6em;
        top: 1.5em;
        border: 0.9em solid transparent;
        border-left: 1.7em solid #a9a9a9;
        z-index: 1;
      }
      
      .balloon p {
        margin: 0;
        padding: 0;
      }
    
      .dr_tohyama_image {
        height: 7.5em;
        width: auto;
        margin: auto 2.5em;
      }

      .footer_section {
        background: black;
        text-align: center;
        padding: 3em 6em;
        bottom: 0;
        margin-top: 1.5em;
      }

      .footer_section p {
        font-weight: bold;
        color: white;
      }