.btn-circle-border-simple1 {
  display: inline-block;
  text-decoration: none;
  color: #668ad8;
  width: 120px;
  height: 120px;
  line-height: 120px;
  border-radius: 50%;
  border: solid 2px #668ad8;
  text-align: center;
  overflow: hidden;
  font-weight: bold;
  transition: .4s;
}

.btn-circle-border-simple:hover {
  background: #b3e1ff;
}