default_style.css

html {
  font-family: sans-serif;
  font-size: 18px;
  line-height: 1.6em;
}

body {
  margin: 0;
  padding: 0;
  color: white;
  background-color: black;
}

.centerbox {
  padding-left: 200px;
  padding-right: 200px;
}

.img-container {
  
}


.block-text {
  width:100%;
  height 100vw;
  text-align: justify;
  margin: 0 auto;
  margin-bottom: 1em;
  font-size: 24px;
  line-height: 120%;
  color: white;
}

.center-text {
  text-align:center;
  font-size: 100px;
  position: relative;
  top: 50%;
  -ms-transform: translateY(-50%);
  -webkit-transform: translateY(-50%);
  transform: translateY(-50%);
}

.center-div-text {
  width: 100px;
  height: 100px;
  color: white;
  font-size: 100px;
  text-align: center;
  line-height: 90px;
}

.center-block-text {
  width:100%;
  height 100vw;
  text-align: center;
  margin: 0 auto;
  margin-bottom: 1em;
  font-size: 26px;
  line-height: 120%;
}

/* fixation should be used like this in: '<div class = centerbox><div class = fixation>+</div></div>'*/
.fixation {
  text-align: center;
  font-size: 150px;
  position: relative;
  top: 50%; 
  transform: translateY(-50%);
  -webkit-transform: translateY(-50%);
}

.jspsych-instructions-nav {
  text-align: center;
  margin-top: 50px;
  position: relative;
  z-index: 1;
}

.jspsych-instructions-nav p {
  font-family: 'Roboto' serif;
  font-size: 20px;
  line-height: 20px;
}

/* Buttons */
.jspsych-btn, #jspsych-instructions-next, #jspsych-instructions-back {
  font-size:22px;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  padding: 12px 20px 12px 20px;
  color: white;
  background-color:cornflowerblue;
  cursor: pointer;
  line-height: 1.4;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  background-image: none;
  border: 1px solid transparent;
  border-radius: 4px;
}

#jspsych-instructions-next, #jspsych-instructions-back {
 width: 250px;
}

#jspsych-instructions-next, #jspsych-instructions-back {
  padding: 12px 40px 12px 40px;
}

.jspsych-btn:hover, #jspsych-instructions-next:hover, #jspsych-instructions-back:hover {
  border-color:#999;
  background-color: darkblue;
}

#jspsych-survey-multi-choice-next {
  padding-bottom: 10px;
}