.question-mark-modal-root {
  display: block;
  position: fixed;
  overflow: hidden;
  background-color: rgba(0, 0, 0, 0.4);
  left : 0;
  top: 0;
  width: 0px;
  height : 0px;
  opacity: 0;
}

.question-mark-modal-root.question-mark-modal-visible {
  width: 100%;
  height: 100%;
  opacity: 1;
  transition: opacity 0.15s ease-out;
}
.question-mark-modal-visible .question-mark-modal {
  height: 500px;
  width: 500px;
  position: fixed;
  left: 50%;
  top: 50%;
  background: #FFF;
  margin-left: -250px;
  margin-top: -250px;
}

.question-mark--close {
  cursor: pointer;
}

.question-mark--close:after, .question-mark--close:before {
  content: "";
  height: 20px;
  width: 20px;
  border-top: 1px solid #000;
  position: absolute;
  top: 7px;
  right: -8px;
  margin-right: 20px;
  margin-top: 10px;
  transform: rotate(-45deg);
}

.question-mark--close:before {
  right: 6px;
  transform: rotate(45deg);
}

.question-mark--close:hover {
  opacity: 0.3;
}