.disabled {
    background: gray;
  }


</style>
<div class="horizontal scroller">
  <div></div>
  <div></div>
</div>
<div><div class="scroll-button inline-start disabled"></div><div class="scroll-button inline-end"></div></div>
<div class="horizontal scroller">
  <div></div>
  <div></div>
</div>
<div><div class="scroll-button inline-start"></div><div class="scroll-button inline-end disabled"></div></div>
<div class="vertical scroller">
  <div></div>
  <div></div>
</div>
<div><div class="scroll-button block