.portfolio_nav {
  margin-bottom: 50px
}

.portfolio_nav ul li{
  font-size: 16px;
  line-height: 1;
  letter-spacing: 2px;
  text-transform: capitalize;
  cursor: pointer
}

.portfolio_nav ul li {
  background: #f2f4ff;
  border: none;
  -webkit-transition: .3s;
  -o-transition: .3s;
  transition: .3s;
  padding: 12px 27px;
  font-weight: 500;
  position: relative;
  margin: 0 3px 7px;
  display: inline-block;
  border-radius: 5px
}

.portfolio_nav ul li.current_menu_item,
.portfolio_nav ul li:hover {
  color: #fff;
  background: #7db907
}

.portfolio_nav ul li.current_menu_item{
  color: #fff;
  background: linear-gradient(to left, #7db907, #c3ee6c)
}