trace.css

.trace-event {
  position: relative;
  width: 100%;
  display: inline-block;
  left: 15px;
  padding-left: 5px;
}

.trace-event .header {
  cursor: pointer;
}

.trace-event .time {
  position: absolute;
  left: -120px;
  margin-left: -25px;
  display: inline-block;
  vertical-align: middle;
  text-align: right;
  width: 120px;
}
.trace-event:before {
  box-sizing: border-box;
  content: ' ';
  display: block;
  width: 20px;
  height: 20px;
  background: #fff;
  border-radius: 10px;
  border: 4px solid #6db33f;
  z-index: 10;
  position: absolute;
  left: -6px;
  margin-left: -15px;
}
.trace-event.http-4xx:before {
  border-color: #e0ba2d;
}
.trace-event.http-4xx > .title > .status {
  color: #e0ba2d;
}
.trace-event.http-5xx:before {
  border-color: #b30000;
}
.trace-event.http-5xx > .title > .status {
  color: #b30000;
}
.trace-event.http-1xx:before,
.trace-event.http-2xx:before,
.trace-event.http-3xx:before {
  border-color: #6db33f;
}
.trace-event.http-1xx > .title > .status,
.trace-event.http-2xx > .title > .status,
.trace-event.http-3xx > .title > .status {
  color: #6db33f;
}
.trace-event.unknown:before {
  border-color: #999999;
}
.trace-event.unknown > .title > .status {
  color: #999999;
}
.trace-event:hover:before {
  background: #ccc;
}