You can match the styles of your tooltip content to one of your color themes. 

<script>
  window.wmTooltipSettings = {
    colorTheme: `white`,
  };
</script>

Here is a list of your color theme options: white, white-bold, light, light-bold, bright, bright-inverse, dark, dark-bold, black, black-bold

 

Specific Styling Options

If you want more fine-tuned control, you can use this custom CSS:

[data-wm-plugin="tooltip"] {
  --tt-font-size: 1rem;
  --tt-font-family: 'Helvetica';
  --tt-font-weight: 400;
  --tt-text-color: blue;
  
  --tt-background-color: white;
  --tt-border-radius: 7px;
  --tt-padding: 7px;
}
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