header {
    top: 0px;
}
.offcanvas-start {
  top: 74px;
}
.page-section.hero.study_over {
    margin-top: 4%;
}
.filter {
    background: #e9e3e5;
    padding: 10px 0px;
}
.filter h2 {
  text-align: center;
  font-weight: 700;
  color: #51a8b6;
  font-size: 28px;
}
.nct_numbers {
  padding: 10px 0px 10px 20px;
  background: #ffff;
  height: 80vh;
  overflow: auto;
}
.nct_numbers a {
    font-size: 20px;
    line-height: 40px;
    display: block;
    text-decoration: none;
    font-weight: 700;
    color: #000;
}
.yeton {
  display: block;
  position: relative;
  padding-left: 35px;
  margin-bottom: 12px;
  cursor: pointer;
  font-size: 18px;
  font-weight: 600;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  color: #676262;
}
  /* Hide the browser's default checkbox */
  .yeton input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
  }
  
  /* Create a custom checkbox */
  .checkmark {
    position: absolute;
    top: 2px;
    left: 0;
    height: 25px;
    width: 25px;
    background-color: #00000061;
}
  
  /* On mouse-over, add a grey background color */
  .yeton:hover input ~ .checkmark {
    background-color: #ccc;
  }
  
  /* When the checkbox is checked, add a blue background */
  .yeton input:checked ~ .checkmark {
    background-color: #51a8b6;
}
  /* Create the checkmark/indicator (hidden when not checked) */
  .checkmark:after {
    content: "";
    position: absolute;
    display: none;
  }
  
  /* Show the checkmark when checked */
  .yeton input:checked ~ .checkmark:after {
    display: block;
  }
  
  /* Style the checkmark/indicator */
  .yeton .checkmark:after {
    left: 9px;
    top: 5px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 3px 3px 0;
    -webkit-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    transform: rotate(45deg);
  }
  .nct_numbers ul li {
    list-style: none;
}
.nct_numbers ul {
    padding: 5px;
    margin-top: 10px;
}
.nct_numbers ul.main_nct label {
  font-size: 19px;
  font-weight: 700;
  color: #322c2ec7;
  padding: 10px 0px;
}
.nct_numbers h2 {
  font-size: 22px;
  font-weight: 600;
  color: #51a8b6;
}
.nct_numbers h3 {
  font-size: 21px;
  font-weight: 600;
  color: #51a8b6;
}
ul.main_nct input {
  width: 90%;
  height: 30px;
  border: 2px solid #51a8b6;
  box-shadow: rgb(81 168 182 / 7%) 0px 7px 29px 0px;
}
.nct_numbers hr {
  height: 2px;
  margin: 0px;
}
/* width */
.nct_numbers::-webkit-scrollbar {
  width: 5px;
}
/* Track */
.nct_numbers::-webkit-scrollbar-track {
  box-shadow: inset 0 0 5px grey; 
  border-radius: 10px;
}
/* Handle */
.nct_numbers::-webkit-scrollbar-thumb {
  background: #51a8b6; 
  border-radius: 10px;
}
/* ================= responsive css start here ============ */
@media all and (min-width:481px) and (max-width:768px){

}
@media all and (min-width:320px) and (max-width:480px){
  .offcanvas-start {
    top: 62px;
}
.page-section.hero.study_over {
  margin-top: 16%;
}
.offcanvas-start {
  top: 62px;
  left: 332px;
  background: #424242;
}
}
/* ================= responsive css end here ============ */