.btn-add {
  min-width: 180px;
  height: 35px;
  border-radius: 20px;
  background: -webkit-gradient(linear, left top, left bottom, from(#ececec), to(#d1d1d1));
  background: -webkit-linear-gradient(#ececec 0%, #d1d1d1 100%);
  background: -o-linear-gradient(#ececec 0%, #d1d1d1 100%);
  background: linear-gradient(#ececec 0%, #d1d1d1 100%); }