.green_bttn{
  background: rgba(180,229,145,1);
}
.green_bttn:hover{
  background: rgba(131,212,73,1);
}
.green_bttn:active{
  background: rgba(89,198,11,1);
}

.blue_bttn{
  background: rgba(104,158,239,1);
}
.blue_bttn:hover{
  background: rgba(78,134,235,1);
}
.blue_bttn:active{
  background: rgba(47,96,228,1);
}

.red_bttn{
  background: rgba(217,93,93,1);
}
.red_bttn:hover{
  background: rgba(199,49,49,1);
}
.red_bttn:active{
  background: rgba(140,22,22,1);
}

.question_category LI {
  float:left;
  display:inline;
}

#footer { bottom: auto !important; }