#overlay {
  background: #ffffff;
  color: #666666;
  position: fixed;
  height: 100%;
  width: 100%;
  z-index: 5000;
  top: 0;
  left: 0;
  float: left;
  text-align: center;
  padding-top: 25%;
  opacity: 0.8;
}
.subject-image {
  object-fit: scale-down;
  height: 100px;
  width: 100px;
}

.mark,
mark {
  background-color: #d9d3b3 !important;
}
a div.card {
  text-decoration: none;
  color: #343a40 !important;
}
.list-group-item {
  border: 1px solid rgba(0, 0, 0, 0.125) !important;
}
.ql-snow .ql-tooltip {
  left: 10px !important;
  top: 10px !important;
}
.error-span {
  font-weight: 500;
}