div.mrs-ContextMenu  {
  visibility: hidden;
  position: absolute;
  padding: .3rem;
  border-radius: .3rem;
  background: rgba(210,210,210,0.95);
  box-shadow: 0 .7rem 2rem rgba(0,0,0,0.15);
}
.mrs-ContextMenu ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: block;
}
.mrs-ContextMenu .menu-item{
  list-style: none;
  font-size: 1rem;
  height: 2rem;
  display: flex;
  width: 100%;
  cursor: pointer;
  align-items: center;
  border-radius: .3rem;
  padding: 0 .3rem;
}
.mrs-ContextMenu .menu-item:hover{
  background: #f2f2f2;
}

.menu-item > div.icon {
  flex: 0 0 auto;
  min-width: 1.2rem;
}
.menu-item > div.title {
  flex: 1 1 auto;
}
.menu-item > div.popup {
  flex: 0 0 auto;
  margin-left: .5rem;
}

.menu-item > .menu-popup-menu{
  position: absolute;
  background: rgba(210,210,210,0.95);
  width: auto;
  left: 95%;
  padding: .25rem;
  opacity: 0;
  pointer-events: none;
  border-radius: .3rem;
  box-shadow: 0 .7rem 2rem rgba(0,0,0,0.15);
  transition: 0.2s ease;
  white-space:  nowrap;
}
.menu-item:hover > .menu-popup-menu {
  opacity: 1;
  pointer-events: auto;
}