react-json.css

/* JSON Editor */
.jsonEditor * {
	vertical-align: top;
}

.jsonEditor > .jsonObject > .jsonChildren {
	margin-left: 0;
	border-left: 0;
	padding: 0;
}

.jsonChildren {
  margin-left: 20px;
  display: none;
  font-weight: normal;
  border-left: 1px dotted #ddd;
}
.jsonFlex .jsonChildren {
	margin-left: -20px;
}
.jsonCompound.open > .jsonChildren {
  display: block;
}

.jsonAdd {
	margin-left: 5px;
}
.jsonFlex .jsonField {
	display: -ms-flexbox;
	display: -webkit-flex;
	display: flex;
	-webkit-flex-direction: row;
	-ms-flex-direction: row;
	flex-direction: row;
	-webkit-flex-wrap: nowrap;
	-ms-flex-wrap: nowrap;
	flex-wrap: nowrap;
	-webkit-justify-content: flex-start;
	-ms-flex-pack: start;
	justify-content: flex-start;
	-webkit-align-content: stretch;
	-ms-flex-line-pack: stretch;
	align-content: stretch;
}
.jsonFieldAdder {
  margin-left: 13px;
}
.jsonFieldAdder select {
  margin-left: 5px;
}
.compoundToggle:before {
  content: '▸';
  color: #333;
  line-height: 1em;
  margin-right: 3px;
}
.open > .compoundToggle:before {
  content: '▾';
}

.jsonName {
  font-style: italic;
  text-align: right;
  position: relative;
  padding-left: 15px;
  white-space: nowrap;
}

.jsonValue {
  padding-left: 5px;
  flex-grow: 1;
}

.jsonValue > input,
.jsonValue > textarea,
.jsonValue > select {
	margin-bottom: 5px;
}

.jsonFlex input[type=text],
.jsonFlex input[type=number],
.jsonFlex input[type=password],
.jsonFlex textarea {
	width: 100%;
}

.jsonRemove, .jsonFixed {
  visibility: hidden;
  margin-right: 5px;
  text-decoration: none;
  width: .6em;
  display: inline-block;
  position: absolute;
  left: 0;
}

.jsonName:hover > .jsonRemove {
  visibility: visible;
}
pre {
  background: #eee;
  border: 1px solid #ddd;
  padding: 5px;
  float: left;
  width: 180px;
  margin: 0 10px 0 0;
}

.compoundToggle, .jsonString{
  cursor: pointer;
}

.booleanField * {
	vertical-align: middle;
}

.booleanField input {
	margin-bottom: 0;
}

.jsonError > .jsonName,
.jsonError .jsonErrorMsg {
	color: #f36;
}

.jsonError .jsonErrorMsg {
	margin: 0 0 10px 10px;
	font-size: 0.9em;
	vertical-align: bottom;
	display: block;
}

.jsonError > .jsonValue > input,
.jsonError > .jsonValue > select,
.jsonError > .jsonValue > textarea {
	background-color: #fff8f8;
}

.jsonNovalue {
	color: #999;
	font-style: italic;
}

.jsonGroup {
	margin-bottom: 10px;
}