.title_label{
    position: absolute;
      left: 0;
      bottom: 0;
      height: 75px;
      background: white;
      color: rgb(102,102,102);
      font-size: 48px;
      letter-spacing: 8px;
      padding: 5px 40px;
      transition: 0.5;
      opacity: 0.8;
  }
  .banner_img{
    width: 100%;
  }
  .card{
    margin-bottom: 80px;
  }
  .card > img{
    width: 100%;
    border: 1px solid gray;
  }
  .card_title{
    padding-top: 10px;
    text-align: center;
      width: 100%;
      font-size: 26px;
      background-color: #009781;
      color: white;
      font-weight: 900;
      border: 1px solid #DDDDDD;
  }
  .container_title{
    margin: 40px auto;
    font-size: 27pt;
  }
  #main_box{
    margin-bottom: 0px;
  }
  .list-group-item span {
    border: solid #222;
    border-width: 0 1px 1px 0;
    display: inline;
    cursor: pointer;
    padding: 3px;
    position: absolute;
    right: 0;
    margin-top: 10px;
  }
  .article{
    border: 1px solid rgb(21,150,129);
    padding: 0px;
    margin-bottom: 40px;
    border-radius: 5px;
  }
  .article img,.article_content img{
    width: 100% !important;
    height: 100% !important;
  }
.list-group-item a.btn.collapsed span {
  transform: rotate(40deg);
  -webkit-transform: rotate(40deg);
  transition: .3s transform ease-in-out;
  margin-right: 20px;
}


.list-group-item a.btn span {
  transform: rotate(-140deg);
  -webkit-transform: rotate(-140deg);
  transition: .3s transform ease-in-out;
  margin-right: 20px;
}

.medical_knowledge{
  margin-top: 50px;
}
#page_selection{
  text-align: center;
}
.list-group{
    border-radius: 0px;
}

.list-group-item{
    border-top: 1px;
    border-bottom: 1px;
    border-style: solid;
    border-right: 0px;
    border-left: 0px;
    border-radius: 0;
    border-color: #009781;
}
.list-group-item:first-child{
    border-top-left-radius: 0px !important;
    border-top-right-radius: 0px !important;
}
.list-group-item:last-child{
    border-top-left-radius: 0px !important;
    border-top-right-radius: 0px !important;
    border-bottom-right-radius: 0px !important;
    border-bottom-left-radius: 0px !important;
}