html,
  body,
  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
    font-family: "Roboto", sans-serif
  }
  A {
    text-decoration: none;
  }

    * {
      box-sizing: border-box
    }

    /* Set height of body and the document to 100% */
    body,
    html {
      height: 100%;
      margin: 0;
      font-family: Arial;
    }

    /* Style tab links */
    .tablink {
      background-color: #555;
      color: white;
      float: left;
      border: none;
      outline: none;
      cursor: pointer;
      padding: 14px 16px;
      font-size: 17px;
      width: 25%;
    }

    .tablink:hover {
      background-color: #777;
    }

    /* Style the tab content (and add height:100% for full page content) */
    .tabcontent {
      color: white;
      display: none;
      padding: 100px 20px;
      height: 100%;
    }

/* Slideshow container */
.slideshow-container {
  max-width: 1000px;
  position: relative;
  margin: auto;
}
.mySlides img.resize {
  max-height: 50%;
  max-width: 50%;
}

/* Hide the images by default */
.mySlides {
  display: none;
  text-align: center;
  background-color: #bbb;
}

/* Next & previous buttons */
.prev, .next {
  cursor: pointer;
  position: absolute;
  top: 50%;
  width: auto;
  margin-top: -22px;
  padding: 16px;
  color: white;
  font-weight: bold;
  font-size: 18px;
  transition: 0.6s ease;
  border-radius: 0 3px 3px 0;
  user-select: none;
}

/* Position the "next button" to the right */
.next {
  right: 0;
  border-radius: 3px 0 0 3px;
}

/* Caption text */
.text {
  color: #f2f2f2;
  font-size: 15px;
  padding: 8px 12px;
  position: absolute;
  bottom: 8px;
  width: 100%;
  text-align: center;
  text-shadow: -1px 0 black, 0 1px black, 1px 0 black, 0 -1px black;
}

/* Number text (1/3 etc) */
.numbertext {
  color: #f2f2f2;
  font-size: 12px;
  padding: 8px 12px;
  position: absolute;
  top: 0;
  text-shadow: -1px 0 black, 0 1px black, 1px 0 black, 0 -1px black;
}

/* The dots/bullets/indicators */
.dot {
  cursor: pointer;
  height: 15px;
  width: 15px;
  margin: 0 2px;
  background-color: #bbb;
  border-radius: 50%;
  display: inline-block;
  transition: background-color 0.6s ease;
}

/* Fading animation */
.fade {
  -webkit-animation-name: fade;
  -webkit-animation-duration: 1.5s;
  animation-name: fade;
  animation-duration: 1.5s;
}

@-webkit-keyframes fade {
  from {opacity: .4}
  to {opacity: 1}
}

@keyframes fade {
  from {opacity: .4}
  to {opacity: 1}
}

/* On hover, add a black background color with a little bit see-through */
.prev:hover, .next:hover {
  background-color: rgba(0,0,0,0.8);
}

.active, .dot:hover {
  background-color: #717171;
}

/* research section collapsibles */
.collapsible {
  background-color: #777;
  color: white;
  cursor: pointer;
  padding: 18px;
  width: 100%;
  border: none;
  text-align: left;
  outline: none;
  font-size: 15px;
}

.active:hover,.collapsible:hover {
  background-color: #555;
}

/*.collapsible:after {
  background-color: #009688;
}*/

.active {
  background-color: #009688;
}

.collapsible:after {
  content: '\002B';
  color: white;
  font-weight: bold;
  float: right;
  margin-left: 5px;
} 

.active:after {
  content: "\2212";
}

.content {
  padding: 0 18px;
  max-height: 500px;
  display: none;
  overflow: auto;
  transition: max-height 0.2s ease-out;
}

.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
}