.client-container {
  display: flex;
}
.client-id {
  padding: 2px 4px;
  margin: 0 4px;
  border-radius: 10px;
  background-color: #eee;
}
.client-container .ql-toolbar {
  margin-top: 10px;
}
.client-container .ql-container {
  height: 300px;
}
#client-a,
#client-b {
  width: 50%;
  margin: 15px;
}

.online-clients {
  margin: 1rem 0;
  font-family: monospace;
}
.online-clients:before {
  display: block;
  margin-bottom: 4px;
  content: 'online-clients: ';
}

/* sync mode option */
.syncmode-option {
  margin: 30px 0 10px;
  display: flex;
  align-items: center;
}

.realtime-sync {
  display: flex;
  flex-direction: row;
  position: relative;
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 4px;
  gap: 4px;
  margin: 0 4px;
}

.realtime-sync-title {
  position: absolute;
  top: -14px;
  left: 0;
  font-size: 12px;
}

.option input[type='radio'] {
  display: none;
}

.option label,
.option .manual-sync {
  display: inline-block;
  padding: 2px 6px;
  border: 1px solid #ccc;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
}

.option label:hover {
  background-color: #f0f0f0;
}

.option input[type='radio']:checked + label {
  background-color: #007bff;
  color: #fff;
}

.option .manual-sync {
  display: none;
}

.option .manual-sync:hover {
  background-color: #ddd;
}

.option input[type='radio']:checked + label + .manual-sync {
  display: inline-block;
}

.ql-editor {
  caret-color: transparent;
}
.ql-editor ::selection {
  background: none;
}