mermaid/src/less/default/mermaid.less

@import "variables";
@import "flow";
@import "sequenceDiagram";
@import "gantt";
@import "variables";

text {
  font-family: 'trebuchet ms', verdana, arial;
  font-size:14px;
}

div.mermaidTooltip {
  position: absolute;
  text-align: center;
  max-width: 200px;
  padding: 2px;
  font-family: 'trebuchet ms', verdana, arial;
  font-size: 12px;
  background: @secondBkg;
  border: 1px solid @border2;
  border-radius: 2px;
  pointer-events: none;
  z-index:100;
}