header nav ul li .lang_n {
  width: 20px;
  height: 20px;
  border: none;
  line-height: 20px;
  font-size: 10px;
  color: #25a7a9;
  -webkit-border-radius: 50%;
  -moz-border-radius: 50%;
  border-radius: 50%;
  background: none;
  padding: 0;
  outline: none !important;
  -webkit-transition: all 0.3s ease-in-out;
  -moz-transition: all 0.3s ease-in-out;
  -o-transition: all 0.3s ease-in-out;
  -ms-transition: all 0.3s ease-in-out;
  transition: all 0.3s ease-in-out;
  margin: 0 2px 2px 2px;
  display: block;
  cursor: pointer;
  background-position: center center;
  background-repeat: no-repeat;
  background-size: cover;
}
header nav ul li .lang_n:hover {
  background: #25a7a9;
  border: none;
  color: #FFF;
}
header nav ul li .lang_n.active {
  background: #25a7a9 !important;
  color: #FFF !important;
}

.d_flex {
  margin: -9px 5px 0 0;
}

@media screen and (max-width: 768px) {
  .d_flex {
    margin: 10px 5px 0 5px;
    text-align: center;
  }
  header nav ul li .lang_n {
    width: 40px;
    height: 40px;
    border: none;
    line-height: 40px;
    font-size: 14px;
    color: #25a7a9;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    border-radius: 50%;
    background: none;
    padding: 0;
    outline: none !important;
    -webkit-transition: all 0.3s ease-in-out;
    -moz-transition: all 0.3s ease-in-out;
    -o-transition: all 0.3s ease-in-out;
    -ms-transition: all 0.3s ease-in-out;
    transition: all 0.3s ease-in-out;
    margin: 0 2px 2px 2px;
      display: inline-block;
      vertical-align: top;
    cursor: pointer;
    background-position: center center;
    background-repeat: no-repeat;
    background-size: cover;
  }
}