.btn-border_sp1 {
  display: inline-block;
  width: 100%;
  text-align: center;
  background-color: #39b54a;
  border: 1px solid #39b54a;
  font-style: normal;
  font-size: 13px; 
  color: #ffffff;
  text-decoration: none;
  font-weight: 400;
  padding: 0.4em 2em 0.4em 2em;
  border-radius: 2px;
  transition: .3s;
}

.btn-border_sp1:hover {
  background-color: #ffffff;
  border-color: #39b54a;
  color: #39b54a;
}