.historymonth-square {
  position: relative;
  display: block;

  width: 100%;
  padding-top: 100%;

  background-repeat: no-repeat;
  background-size: cover;

  border-radius: 10px;
}

.historymonth-square a {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;

  padding: 2em;

  text-align: center;
  line-height: 1.1em;
  text-transform: uppercase;
  font-weight: 900;
  font-size: 160%;
  color: white;
  text-shadow: 0 0 5px black;
  
  transition: color 0.6s, text-shadow 0.4s;
}

.historymonth-square a:visited { color: white; }
.historymonth-square a:hover {
  text-decoration: none;
  background-color: rgba(0,0,0,0.1);
  color: rgba(255,255,255,0.2);
  text-shadow: 0 0 5px rgba(0,0,0,0);
}

.historymonth-square__black { background-image: url("https://www.derbyunion.co.uk/pageassets/equality/AM-black.jpg") }
.historymonth-square__lgbt { background-image: url("https://www.derbyunion.co.uk/pageassets/equality/AM-lgbt.jpg") }
.historymonth-square__disability { background-image: url("https://www.derbyunion.co.uk/pageassets/equality/AM-disability.jpg") }
.historymonth-square__mentalhealth { background-image: url("https://www.derbyunion.co.uk/pageassets/equality/AM-mental.jpg") }
.historymonth-square__faith { background-image: url("https://www.derbyunion.co.uk/pageassets/equality/AM-faith.jpg") }
.historymonth-square__iwd { background-image: url("https://www.derbyunion.co.uk/pageassets/equality/AM-womens.jpg") }

.copyright-disclaimer {
    font-size: 0.5rem;
    margin-block-start: 5rem;
    padding-block: 2em;
    border-top: 1px solid rgb(220,220,220);
}
.copyright-disclaimer p {
    margin: 0.5rem 0 0 0;
}