.truncate-by-height {
  position: relative;
  overflow: hidden;

  &:before {
    content: " ";
    width: 100%;
    height: 15px; // copied into index.html!
    position: absolute;
    left: 0;

    background: -moz-linear-gradient(top,  rgba(255,255,255,0) 0%, rgba(255,255,255,0.01) 1%, rgba(255,255,255,0.99) 99%, rgba(255,255,255,1) 100%); /* FF3.6+ */
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(255,255,255,0)), color-stop(1%,rgba(255,255,255,0.01)), color-stop(99%,rgba(255,255,255,0.99)), color-stop(100%,rgba(255,255,255,1))); /* Chrome,Safari4+ */
    background: -webkit-linear-gradient(top,  rgba(255,255,255,0) 0%,rgba(255,255,255,0.01) 1%,rgba(255,255,255,0.99) 99%,rgba(255,255,255,1) 100%); /* Chrome10+,Safari5.1+ */
    background: -o-linear-gradient(top,  rgba(255,255,255,0) 0%,rgba(255,255,255,0.01) 1%,rgba(255,255,255,0.99) 99%,rgba(255,255,255,1) 100%); /* Opera 11.10+ */
    background: -ms-linear-gradient(top,  rgba(255,255,255,0) 0%,rgba(255,255,255,0.01) 1%,rgba(255,255,255,0.99) 99%,rgba(255,255,255,1) 100%); /* IE10+ */
    background: linear-gradient(to bottom,  rgba(255,255,255,0) 0%,rgba(255,255,255,0.01) 1%,rgba(255,255,255,0.99) 99%,rgba(255,255,255,1) 100%); /* W3C */
  }
}