.add {
  background: #2eca6a;
  padding: 20px;
  font-size: 24px;
  color: #fff;
  border: none;
  border-radius: 300px;
/*  display: block;*/
  margin: auto;
  margin-top: 50px;
  padding-top: 10px;
  padding-bottom: 10px;
  margin-bottom: 50px;
}
.add:hover{
  color: #2eca6a;
}