.flex-container {
  display: flex;
  flex-wrap: wrap;
  background-color: none;
  align-items: center;
  justify-content: center;
}

.flex-container > div {
/*  box-shadow: 0 5px 10px -5px rgba(0,0,0,0.5);
  background-color: #d0d5df;*/
  width: 300px;
  margin: 2%;
  justify-content: center;
  align-items: center;
  text-align: center;
  line-height: 150px;
/*  font-size: 30px;
  border-radius: 15px;*/
}
/*
.flex-container.div.a:link, a:visited {
  background-color: #d0d5df;
  width: 300px;
  margin: 2%;
  justify-content: center;
  align-items: center;
  text-align: center;
  line-height: 75px;
  font-size: 30px;
}

.flex-container.div:hover, .flex-container.div:active {
  background-color: #9ca6ba;
}*/