.panel-heading-nav {
  border-bottom: 0;
  padding: 10px 0 0;
}
.panel-heading-nav .nav {
  padding-left: 10px;
  padding-right: 10px;
}
.panel-body {
  padding: 0;
}
.nav>li>a {
  text-decoration: none;
  background-color: #eee;
}
input:valid, select:valid {
  border:2px solid darkcyan;
}
input:invalid, select:invalid {
  border:2px solid rgb(219, 67, 90);
  color:#f24;
}
label.error {
  color:#f24;
  display: inline;
}
@media (min-width: 1200px){
  #content
    .col-lg-2:nth-child(6n + 1), .col-lg-3:nth-child(4n + 1), .col-lg-4:nth-child(3n + 1), .col-lg-6:nth-child(2n + 1) {
      clear: none !important;
    }
}

@media (min-width: 992px) and (max-width: 1199px){
  #content
    .col-md-2:nth-child(6n + 1), .col-md-3:nth-child(4n + 1), .col-md-4:nth-child(3n + 1), .col-md-6:nth-child(2n + 1) {
      clear: none !important;
    }
}

@media (min-width: 768px) and (max-width: 991px) {
  #content
    .col-sm-2:nth-child(6n + 1), .col-sm-3:nth-child(4n + 1), .col-sm-4:nth-child(3n + 1), .col-sm-6:nth-child(2n + 1) {
      clear: none !important;
    }
}

.unShow {
  display: none;
}