/* Solid black borders for MkDocs Material cards */
.md-typeset .grid.cards > ul > li {
  border: 2px solid #000;      /* solid black border */
  border-radius: 10px;         /* optional: rounded corners */
  box-shadow: none;            /* remove default shadow */
}

/* optional: keep consistent padding */
.md-typeset .grid.cards > ul > li > * {
  margin: 0.5em 0;
}

/* optional hover effect */
.md-typeset .grid.cards > ul > li:hover {
  border-color: #222;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
}