.field--name-field-pdf-etisias-ekthesis,.field--name-field-newsletter-file{
  display: none;
}
.img-responsive, .thumbnail>img, .thumbnail a>img, .carousel-inner>.item>img, .carousel-inner>.item>a>img {
    display: initial;
}
.field--name-field-pdfimage img:hover {
    -webkit-filter: brightness(1.1);
    transform: scale(1.2,1.2);
    position: relative;
    z-index: 2;
}