@media (max-width: 600px) {
    .card {
        width: 100%;
        margin-bottom: 20px;
    }
}

.tool-iframe{
  width: 100%;
  height: 75vh;        /* fills most of the viewport */
  min-height: 700px;   /* prevents tiny iframes on desktop */
  border: 0;
  overflow: auto;      /* ensures scrollbars appear when needed */
  display: block;
}