html {
  position: relative;
  min-height: 100%;
}
body {
  /* Margin bottom by footer height */
  margin-bottom: 60px;
}
.footer {
  position: absolute;
  bottom: 0;
  width: 100%;
  /* Set the fixed height of the footer here */
  height: 60px;
  background-color: #f5f5f5;
}
.footer .text-muted {
  margin: 20px 0;
}
.font-12{
  font-size: 1.2em;
}

.label-radio .control-label{
  padding-top: 0;
}

#exp-con{
  margin-top: 1em;
  margin-bottom: 1em;
}
#exp-con .btn{
  font-size: 1.2em;
}
#tips-con{
  margin-bottom: 1em;
  min-height: 25px;
  font-size: 1.5em;
  /* font-weight: bold; */
}
#stimuli-con{
  margin-top: 4em;
  min-height: 100px;
}
#stimuli-con p{
  font-size: 1.5em;
}
#button-con{
	text-align: center;
}
.quiz-block {
  margin-bottom: 1em;
}
.button-block{
  margin-top: 1em;
  margin-bottom: 1em;
}
.center-block {
  display: block;
  text-align: center;
  width: 100%;
  min-height: 35px;
  margin-left: auto;
  margin-right: auto;
}

.btn-default:active, .btn-default:hover {
  color: #333;
  background-color: #fff;
  border-color: #ccc;
}

#exp-con #prev-con{
  float: left;
}
#exp-con #btnPrev{
  width:46px;
}


@media (max-width: 360px){
  #exp-con #prev-con{
    position: absolute;
    left: 0;
  }
}

@media (max-width: 767px){
  #exp-con .btn{
    float: left;
    width: 100%;
  }
  #stimuli-con{
    margin-top: 1em;
    min-height: 2em;
  }
  #button-con{
    width:70%;
  }
}

@media (max-width: 991px){
  #stimuli-con{
    margin-top: 2em;
    min-height: 3em;
  }
  #exp-con .btn{
    padding: 6px 9px;
  }
}

@media
only screen and (-webkit-min-device-pixel-ratio: 2),
only screen and (   min--moz-device-pixel-ratio: 2),
only screen and (     -o-min-device-pixel-ratio: 2/1),
only screen and (        min-device-pixel-ratio: 2),
only screen and (                min-resolution: 192dpi),
only screen and (                min-resolution: 2dppx) {
  #exp-con .btn{
    margin: 5px 0;
  }
}