@cogic/annotorious/public/examples/custom-style/custom-style.css

A JavaScript image annotation library

svg.a9s-annotationlayer .a9s-selection .a9s-outer, 
svg.a9s-annotationlayer .a9s-annotation .a9s-outer {
  display:none;
}

svg.a9s-annotationlayer .a9s-selection .a9s-inner,
svg.a9s-annotationlayer .a9s-annotation .a9s-inner  {
  stroke-width:4;
  stroke:white;
  stroke-dasharray:5;
}

svg.a9s-annotationlayer .a9s-annotation.editable:hover .a9s-inner {
  fill:transparent;
}

svg.a9s-annotationlayer .a9s-handle .a9s-handle-outer {
  display:none;
}

svg.a9s-annotationlayer .a9s-handle .a9s-handle-inner {
  fill:white;
  stroke:white;
  transform:scale(1, 1);
}

svg.a9s-annotationlayer .a9s-selection-mask {
  fill:rgba(0, 0, 0, 0.6);
}