button
  {
 
  border-radius:15px;
  margin:5px;
}

/* Style the tab */
.tab {
  overflow: hidden;
 
}

/* Style the buttons inside the tab */
.tab button {
  background-color: inherit;
 
  border: none;
  outline: none;
  cursor: pointer;
  padding: 8px;
  font-size: 17px;
  background-color: #04458f;
    color:#FFF;
}

/* Change background color of buttons on hover */
.tab button:hover {
  background-color: #ddd;
    color:#000;
}

/* Create an active/current tablink class */
.tab button.active {
  background-color: #37a5e4;
  color:#FFF
}

/* Style the tab content */
.tabcontent {
  display: none;
  padding: 6px 12px;
  border-top: none;
}

/* Style the close button */
.topright {
  float: right;
  cursor: pointer;
  font-size: 28px;
}

.topright:hover {color: red;}