#dwnldBtn{
    background-color: green; 
    color: #fff; 
    padding: 10px; 
    border: none;
    border-radius: 5px; 
    margin: 2rem 0;
    cursor: pointer;
}

.student {
  font-family: Helvetica;
  border-collapse: collapse;
  width: 100%;
  margin: 25px 0;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.25);
}

.student th{
  border: 0.5px solid grey;
  padding: 5px;
  font-size: auto;
  background-color: lightgreen;
  font-weight: bold;
}
.student td{
  border: 1px solid #ddd;
  padding: 8px;
  font-size: 0.8em;
}

.student tr:nth-child(even){
    background-color: #f3f3f3;
}

.student tr:hover {
    background-color: cyan;
}

.stud{
   writing-mode: vertical-lr;
   text-orientation: vertical;
}
.main{
    border-style: ridge;
    padding: 10px;

}
#main td{
    padding: 10px;
}
/* Toggle Switch Styles */
.switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  -webkit-transition: .4s;
  transition: .4s;
}

.slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  -webkit-transition: .4s;
  transition: .4s;
}

input:checked + .slider {
  background-color: #2196F3;
}

input:focus + .slider {
  box-shadow: 0 0 1px #2196F3;
}

input:checked + .slider:before {
  -webkit-transform: translateX(20px);
  -ms-transform: translateX(20px);
  transform: translateX(20px);
}

/* Rounded sliders */
.slider.round {
  border-radius: 26px;
}

.slider.round:before {
  border-radius: 50%;
}