.explain-dialog {
  position: fixed;
  inset: 0;
  z-index: 3000;
  height: 100vh;
  width: 100vw;
}

.explain-dialog-mask {
  position: fixed;
  left: 0;
  top: 0;
  width: 100vw;
  height: 100vh;
  opacity: .5;
  background: #000;
  z-index: 2000;
}

.explain-dialog-wrapper {
  width: 1000px;
  position: relative;
  margin: 16vh auto;
  background: #fff;
  border-radius: 2px;
  box-sizing: border-box;
  box-shadow: 1px 1px 3px 0px rgba(48, 48, 77, 0.07);
  border-radius: 9px;
  padding: 16px;
  z-index: 9999;
}
.explain-dialog-content {
  width: 100%;
  max-height: 500px;
  overflow-y: auto;
  margin-top: 20px;
}

.explain-dialog-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.explain-dialog-img {
  width: 14px;
  height: 14px;
  position: absolute;
  right: 16px;
  cursor: pointer;
}

.explain-dialog-table-wrapper {
  margin-top: 16px;
  overflow: auto;
  max-height: 500px;
}
.explain-dialog-table {
  width: 100%;
  table-layout: fixed;
  overflow: auto;
}

.explain-dialog-table thead {
  position: sticky;
  top: 0;
  z-index: 10;
}
.explain-dialog-table tbody {
  max-height: 300px;
  overflow-y: auto;
}

.explain-dialog-table th {
  padding: 12px 2em;
  background: #005bac;
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
}

.explain-dialog-table td {
  text-align: left;
}

.explain-dialog-table th:nth-child(1),
.explain-dialog-table td:nth-child(1) {
  width: 10%;
}

.explain-dialog-table th:nth-child(2),
.explain-dialog-table td:nth-child(2) {
  width: 18%;
}

.explain-dialog-table th:nth-child(3),
.explain-dialog-table td:nth-child(3) {
  width: 72%;
}

.explain-dialog-wrapper--m {
  width: 80%;
}

.explain-dialog-wrapper--m th:nth-child(1) {
  width: 100px;
  position: sticky;
  left: 0;
  z-index: 100;
}

.explain-dialog-wrapper--m td:nth-child(1) { 
  width: 100px;
  position: sticky;
  left: 0;
  z-index: 5;
  background-color: #fff;
}

.explain-dialog-wrapper--m th:nth-child(2),
.explain-dialog-wrapper--m td:nth-child(2),
.explain-dialog-wrapper--m th:nth-child(3),
.explain-dialog-wrapper--m td:nth-child(3) {
  width: 100px;
}