div.NavButton {
  position: fixed;
  left: 0;
  width: 24px;
  height: 24px;
  margin: 5px;
  padding: 5px;
  cursor: pointer;
}
div.NavButton:nth-of-type(1) {
  top: 0;
}
div.NavButton:nth-of-type(2) {
  top: 44px;
}
div.NavButton:nth-of-type(3)  {
  top: 88px;
}
div.NavButton:nth-of-type(4)  {
  top: 132px;
}

div.NavButton:nth-of-type(7n+1):hover {
  color: #008026;
}
div.NavButton:nth-of-type(7n+2):hover {
  color: #C16FF7;
}
div.NavButton:nth-of-type(7n+3):hover {
  color: #004dff;
}
div.NavButton:nth-of-type(7n+4):hover {
  color: #ff8c00;
}

div.NavButton.disabled {
  background-color: #3F3F3F;
  border-radius: 3px;
  color: white;
  cursor: default;
}
div.NavButton.disabled:hover {
  color: white;
}
div.NavButton a {
  color: inherit;
}
#NotificationCircle {
  display: none;
}
#NotificationCircleLogo {
  position: fixed;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
}

@media only screen
  and (orientation : portrait)
  and (max-width: 450px)
  and (-webkit-min-device-pixel-ratio: 2)  {

  div.NavButton {
    margin:  2px;
    padding: 2px;
    cursor: pointer;
  }

  div#HomeButton:not(.HorizontalMobileNavBar) {
    top: 0;
  }
  div#SettingsButton:not(.HorizontalMobileNavBar) {
    top: 32px;
  }
  div#QuestionButton:not(.HorizontalMobileNavBar)  {
    top: 64px;
  }

  div.NavButton.HorizontalMobileNavBar {
    position: relative;
    float: left;
    margin-top: -10px;
    margin-bottom: 10px;
    top: 0;
  }

  /* Applies to any number of items, so 3 really. */
  div#HomeButton.HorizontalMobileNavBar {
    margin-left: calc(50% - 48px);
  }
  /* Applies to 4 items */
  div#HomeButton.HorizontalMobileNavBar:first-child:nth-last-child(n + 4)  {
    margin-left: calc(50% - 48px - 12px);
  }
  div#SettingsForm {
    clear: both;
  }

}