body, html {
  margin: 0;
  padding: 0;
  min-width:100%;
  min-height:100%;
  font: Arial 14px;
}
      
.dropbtn {
  background-color: white;
  padding: 16px;
  font-size: 16px;
  border: 1px solid black;
  cursor: pointer;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
}

.dropbtn:hover, .dropbtn:focus {
  background-color: #efefef;
}

.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: white;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  z-index: 1;
}


.dropdown-content a {
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
}


.dropdown-content a:hover {background-color: #ddd}


.show {display:block;}

#tabs button {
  border-radius: 1px; 
  background-color: white; 
  
        box-shadow: 0 8px 16px 0 rgba(0, 0, 0, 0.2);
}
#tabs button:hover {
  color: white; 
  background-color: black;
  font-size: 20px;
  display: inline-block;
  font-family: Kohinoor Bangla;
  
}
#tabs a {
  text-decoration: none;
  color: black;
    font-size: 20px;
  
  font-family: Kohinoor Bangla;
}
#tabs a:hover {
  color: white;
    font-size: 20px;
  
  font-family: Kohinoor Bangla;
}
#tabs {
  padding: 20px;
}