body {
  font-size: 12pt;
  font-weight: 400;
  color: #4d4d4d;
}

html, body, #root {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.app {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: #f5f5f5;
}
.app .body {
  flex: 1 1;
  display: flex;
  flex-direction: row;
  width: 100%;
  overflow: hidden;
  box-sizing: border-box;
  padding: 12px;
}

.contents-panel {
  flex: 1 1;
  display: flex;
  height: 100%;
  box-sizing: border-box;
}
.contents-panel .left-panel,
.contents-panel .right-panel {
  flex-shrink: 1;
  flex-basis: 0%;
  height: 100%;
  width: 0;
  background: #ffffff;
  overflow: hidden;
  outline: 1px solid #f0f0f0;
}
.contents-panel .left-panel {
  margin-right: 10px;
}
.contents-panel .right-panel {
  margin-left: 10px;
}
.contents-panel .center-panel {
  height: 100%;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
}
.contents-panel .center-panel .empty-space-top {
  flex: 1 1;
}
.contents-panel .center-panel .actions {
  display: flex;
  flex-direction: column;
  margin-bottom: 10px;
}
.contents-panel .center-panel .draggable-splitter {
  flex: 4 1;
  cursor: col-resize;
  border-radius: 3px;
  color: #a8a8a8;
  display: inline-flex;
  align-items: center;
  font-size: 24px;
}
.contents-panel .center-panel .draggable-splitter:hover {
  background: rgba(0, 0, 0, 0.02);
  color: #707070;
}
.contents-panel .center-panel .draggable-splitter .draggable-splitter-icon {
  width: 100%;
  text-align: center;
  user-select: none;
}