#course_layers_table th {
border: 1px solid black;
padding: 10px;
}
.long_modules_validation_summary {
margin-left:auto;
margin-right:auto;
text-align: center;
table-layout:fixed; width: 90%;
}
.long_modules_validation_summary tr {
height: 50px;
}
.long_modules_validation_summary td {
border: 1px solid black;
}
.short_level_summary_header {
text-align: center;
width: 50px;
font-size: 35px;
padding: 0px;
}
.lds-ring {
  display: inline-block;
  position: relative;
  width: 64px;
  height: 64px;
}
.lds-ring div {
  box-sizing: border-box;
  display: block;
  position: absolute;
  width: 51px;
  height: 51px;
  margin: 6px;
  border: 6px solid #fff;
  border-radius: 50%;
  animation: lds-ring 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
  border-color: grey transparent transparent transparent;
}
.lds-ring div:nth-child(1) {
  animation-delay: -0.45s;
}
.lds-ring div:nth-child(2) {
  animation-delay: -0.3s;
}
.lds-ring div:nth-child(3) {
  animation-delay: -0.15s;
}
@keyframes lds-ring {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}