csv-library-website/library/static/css/dropdown.css

/* Dropdown Button */
/* for sorting on Year, Type, License
*/
.menu {
  display:flex;
  gap: 0.3em;
  position: relative;
  margin-left: 1em;
}
.filter {
  display: none;
}
.activebtn {
	background-color: #62b264;
}
.show {
  display: block;
}
/* Dropdown Content (Hidden by Default) */
.dropdown-content {
  display: none;
  position: absolute;
  background-color: #f1f1f1;
  min-width: 120px;
  border: 3px solid black;
  z-index: 1;
}

/* Links inside the dropdown */
.dropdown-content button {
  color: black;
  padding: 6px;
  border: none;
  min-width: inherit;
  text-align: left;
  text-decoration: none;
  display: block;
}
.dropbtn .dropdown {
  margin-top: 1em;
}
/* Change color of dropdown links on hover */
.dropdown-content button:hover {background-color: #62b264;}


/* Show the dropdown menu on hover */
.dropdown:hover .dropdown-content {display: block;}

/* Change the background color of the dropdown button when the dropdown content is shown */
.dropdown:hover .dropbtn {background-color: #3e8e41;}

#booksearch{
  background: #f1f1f1;
  text-decoration: none;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  border: 3px solid black;
  font-family: inherit;
  font-size: 100%;
  box-shadow: 0.3em 0.35em rgba(0,0,0,0.3);
}

button {
  border: 3px solid black;
  padding: 0.8em;
  color: black;
  min-width: auto;
  background-color: #f1f1f1;
  font-family: inherit;
  font-size: 100%;
  box-shadow: 0.3em 0.35em rgba(0,0,0,0.3);
  cursor: pointer;
}

@media only screen and (min-device-width: 320px) and (max-device-width: 480px)  {
  .dropdown-content button {
      font-size: 0.7em;
  }
  .container > button {
      font-size: 0.7em;
  }
  .dropdown > button  {
      font-size: 0.7em;
  }
}