:root {
  --btn-bg-color: #e6f4ff;
  --btn-bg-color-darker: #cce9ff;
}

button.btn-shuffle {
  display: block;
  text-align: center;
  margin: 30px auto;
  border: none;
  background-color: var(--btn-bg-color);
  border: 2px solid var(--btn-bg-color-darker);
  color: #000;
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  font-size: 1.25rem;
  padding: 8px 15px 8px 12px;
  cursor: pointer;
  border-radius: 5px;
  height: auto;
  width: auto;
  transition: 200ms all ease-in-out;
}

button.btn-shuffle::after {
  content: '\292E';
  display: inline-block;
  font-size: larger;
  transform: translate(5px, 0px);
}

button.btn-shuffle:hover,
button.btn-shuffle:active {
  background-color: var(--btn-bg-color-darker);
}

button.btn-shuffle:focus {
  outline-style: solid;
  outline-color: transparent;
  box-shadow: 0 0 0 4px #ffcc00;
}


.container-cards {
  margin: 40px 0;
}

ul.card-list {
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: space-around;
  align-items: center;
  list-style-type: none;
}

ul.card-list li {
  border: 0px solid #000;
  margin: 10px 0;
  padding: 0;
  cursor: pointer;
  position: relative;
  transition: all 0.3s;
  display: flex;
  flex-wrap: wrap;
  flex-direction: column;
  align-content: center;
}

ul.card-list li>p {
  color: #000;
  font-size: larger;
  visibility: hidden;
  text-align: center;
  background-color: inherit;
  margin: 10px 0;
  padding: 0;
  border: 0px solid #000;
}

ul.card-list li:focus>p {
  visibility: visible;
}

ul.card-list li:focus {
  outline: 5px dashed #000;
}

ul.card-list li:hover {
  background-color: inherit;
}



.isActive {
  visibility: visible;
}

a.card-link {
  background: #ffffff;
  text-decoration: none;
  height: 235px;
  border: 5px solid #000;
}

a.card-link span {
  visibility: hidden;
  opacity: 0;
}

a.card-link:hover span.reveal {
  visibility: visible;
  opacity: 1;
  transition: all 0.3s;
}

span.reveal {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  background-color: #000;
  color: #ffffff;
  transition: all 0.3s;
}

.sn {
  color: #fff;
  background-color: #000;
  padding: 10px;
  text-transform: capitalize;
  display: inline-block;
}

@media screen and (min-width: 1000px) {
  ul.card-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
    column-gap: 20px;
    row-gap: 20px;
  }

  ul.card-list li {
    margin: 0;
  }
}