@media (max-width: 767px) {
  .secao-banners {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    height: auto !important;
  }

  .secao-banners .flexslider {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    height: auto !important;
  }

  .secao-banners .slides,
  .secao-banners .slides li,
  .secao-banners .slides img {
    display: block !important;
    width: 100% !important;
    height: auto !important;
    opacity: 1 !important;
    visibility: visible !important;
  }

  .secao-banners .flexslider,
  .secao-banners .flexslider .slides {
    overflow: visible !important;
  }
}