.cards {
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  flex-wrap: wrap;
  margin:0 -1rem;
}

.walk {
  display: block;
  flex-basis: 200px;
  margin: 1rem;
  padding: 0.4em;
  background-color: #f3efd9;
  text-decoration: none;
  color: #5e5e5e;
  outline: 1px solid #5e5e5e;
  transition: all 0.3s ease-in-out;
}

.walk:hover, .walk:focus {
  outline: 2px solid #5e5e5e;
}

.walk img {
  max-width: 100%;
  height: auto;
  margin-bottom: 1em;
}

.walk h5 {
  margin: 0 0 0.4em 0;
  font-size: 1.1rem;
}

.walk ul {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.8rem;
}

.walk li {
  margin: 0.4em 0;
}

.walk li span {
  display: inline-block;
  width: 45%;
  font-weight: 600;
}