I have created tool tip, which looks like this:
But arrow doesn't have border like rest of the element.
CSS is as follows:
 .tooltip {
position: relative;
display: inline-block;
}
.tooltip .tooltiptext {
  visibility: hidden;
  width: 50px;
  height: 30px;
  background-color: #000;
  color: #fdfefe;
  text-align: center;
  border-radius: 0;
  padding: 5px 0;
  bottom: 125%;
  left: 50%;
  margin-left: -110px;
  margin-top: 15px;
  opacity: 1;
  border: 2px solid grey;
  position: absolute;
  z-index: 1;
  top: -20px;
  left: 205%;
}
.tooltip .tooltiptext::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -4px;
  border-width: 6px;
  border-style: solid;
  border-color: #000 transparent transparent transparent;
}
How can I add border to arrow too?

 
     
    