#resource-slider {
  position: relative;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 13em;
  margin: auto;
  
  background: #fff;
  
  overflow: hidden;
}

#resource-slider .arrow {
  cursor: pointer;
  position: absolute;
  width: 2em;
  height: 100%;
  padding: 0;
  margin: 0;
  outline: 0;
  background: transparent;
  border: none;
}

#resource-slider .arrow:hover {
  background: rgba(0, 0, 0, 0.1);
}

#resource-slider .arrow:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 0.75em;
  height: 0.75em;
  margin: auto;
 
}

#resource-slider .prev {
  left: 0;
  bottom: 0;
}

#resource-slider .prev:before {
  left: 0.25em;
  border-width: 3px 0 0 3px;
  border-color: #333 transparent transparent #333;
  transform: rotate(-45deg);
}

#resource-slider .next {
  right: 0;
  bottom: 0;
}

#resource-slider .next:before {
  right: 0.25em;
  border-width: 3px 3px 0 0;
  border-color: #333 #333 transparent transparent;
  transform: rotate(45deg);
}

#resource-slider .resource-slider-frame {
  position: absolute;
  top: 0;
  left: 2em;
  right: 2em;
  bottom: 0;
  border-left: 0.25em solid transparent;
  border-right: 0.25em solid transparent;
  overflow: hidden;
}

#resource-slider .resource-slider-item {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 25%;
  height: 100%;
}

#resource-slider .resource-slider-inset {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0.5em 0.25em;
  overflow: hidden;
}

@media ( max-width: 60em ) {
  #resource-slider .resource-slider-item {
    width: 33.33%;
  }
  #resource-slider {
    height: 16em;
  }
}

@media ( max-width: 45em ) {
  #resource-slider .resource-slider-item {
    width: 50%;
  }
}

@media ( max-width: 30em ) {
  #resource-slider .resource-slider-item {
    width: 100%;
  }
  #resource-slider {
    height: 19em;
  }
}