.box {
  margin: 0 auto;
  padding: 20px;
  width: 100%;
}

.table {
  border: 1px solid #eee;
  padding: 0;
  box-sizing: border-box;
  width: 100%;
}
.table td {
  border: 1px solid #eee;
  padding: 10px;
}

.specs-holder {
  max-height: 300px;
  overflow: hidden;
  position: relative;
}
.specs-holder button {
  position: absolute;
  z-index: 3;
  left: 0;
  bottom: 0;
  cursor: pointer;
}
.specs-holder table {
  position: relative;
  z-index: 1;
}
.specs-holder::after {
  content: "";
  position: absolute;
  z-index: 2;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 300px;
  background: white;
  background: linear-gradient(0deg, white 10%, rgba(255, 255, 255, 0) 100%);
  pointer-events: none;
}
.specs-holder.js-showall {
  max-height: none;
}
.specs-holder.js-showall button, .specs-holder.js-showall::after {
  display: none;
}