Answers for "border bottom none"

css border bottom

.bottomBorder {
  /*           width style color  */
  border-bottom: 5px solid black;
}

css border botttom

div {
  border-bottom: 4px dashed blue;
  background-color: gold;
  height: 100px;
  width: 100px;
  font-weight: bold;
  text-align: center;
}

css border only top and bottom

#element{
  border-left:none;
  border-right:none;
}

border bottom under text only

li {
	a {
		    width: auto;
			display: block;
			height: auto;
            &:hover {
            	border-bottom: 3px solid red;
            }
    }
}