cartodb/assets/stylesheets/editor-3/_edit-overlay.scss

// Edit overlay
// ----------------------------------------------

@import '~cartoassets/src/scss/cdb-variables/colors';

.EditOverlay {
  position: absolute;
  z-index: 4;
  top: 16px;
  right: 16px;
  height: auto;
  transition: all 0.2s;
  opacity: 1;
  text-align: center;

  &.is-hidden {
    height: 0;
    overflow: hidden;
    opacity: 0;
  }
}

.EditOverlay-inner {
  display: inline-block;
  padding: 10px;
  border-radius: 2px;
  background: rgba(#000, 0.6);
}