.collapsible {
  background-color: #72b9f7;
  color: #000;
  cursor: pointer;
  padding: 10px;
  width: 100%;
  text-align: left;
  outline: none;
  font-size: 18px;
margin-bottom:5px; 

border-radius:0px;
}
.active, .collapsible:hover {
  background-color: #91a6ba;
 color: #fff; 
}
.content {
 
max-height: 0;
  overflow: hidden;
  transition: max-height 0.2s ease-out;
  background-color: #Fff;
}