redoc/lib/components/JsonSchema/json-schema.css

h2 {
  border-bottom: 1px solid #999;
  font-size: 18px;
  padding: 0.2em 0;
  margin: 0.5em 0;
  color: #253137;
}

.param-schema {
  padding-left: 13px;
  padding-top: 5px;
  border-left: 1px solid #7D97CE;
}

.param-wrap {
    position: relative;
}

.param-schema:before {
  content: "";
  position: absolute;
  left: 14px;
  top: 10px;
  bottom: 0;
  border-left: 1px solid #7D97CE;
}

.param-name {
  /*display: table-cell;*/
  padding: 0 5px;
  font-weight: bold;
  box-sizing: border-box;
}

.param-info {
  /*display: table-cell;*/
  width: 100%;
  padding: 0 5px;
  box-sizing: border-box;
}

.param {
  display: flex;
}

.param-required {
  color: red;
  font-weight: bold;
  font-size: 12px;
}

.param-description {
  padding: 0.5em 0;
  border-bottom: 1px solid #999;
}

.param-type {
  text-transform: capitalize;
  color: #999;
  font-size: 12px;
  line-height: 2;
}

.param-name {
  border-left: 1px solid #7D97CE;
  white-space: nowrap;
  position: relative;
}
/* tree */
.param-name > span:before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: #7D97CE;
  margin: 0 5px;
  top: -1px;
  position: relative;
}

.param-name > span:after {
  content: "";
  position: absolute;
  border-top: 1px solid #7D97CE;
  width: 10px;
  left: 0;
  top: 10px;
}

.param-wrap:first-of-type .param-name:before {
  content: "";
  display: block;
  position: absolute;
  left: -1px;
  width: 1px;
  background-color: white;
  height: 10px;
}

.param-wrap:last-of-type .param-name:after {
  content: "";
  display: block;
  position: absolute;
  left: -1px;
  width: 1px;
  top: 11px;
  background-color: white;
  bottom: 0;
}

.param-schema .param-wrap:first-of-type .param-name:before {
  display: none !important;
}