Answers for "putting outline color on button css"

border buttom color

div {
	border-bottom-color: coral;
}

outline button css

.btn {
  border: 2px solid black;
  background-color: white;
  color: black;
  padding: 14px 28px;
  font-size: 16px;
  cursor: pointer;
}

/* Green */
.success {
  border-color: #04AA6D;
  color: green;
}

.success:hover {
  background-color: #04AA6D;
  color: white;
}