button {
  border: 1px solid #d3d3d3;
  background-color: #fff;
  outline: none;
  color: #666;
  border-radius: 8px;
  padding: 10px 20px;
  transition: all 0.3s ease-in-out;
  cursor: pointer;
}

.btn:hover,
.btn-default:hover {
  background-color: #efefef;
}

.btn-primary:hover {
  background-color: #108ee9;
  color: #fff;
  border-color: #108ee9;
}

.btn,
.btn-default {
  border: 1px solid #d3d3d3;
  background-color: #fff;
  outline: none;
  color: #666;
  font-size: 16px;
}

.btn-sm {
  font-size: 12px;
}

.btn-lg {
  font-size: 20px;
}