.card_div{
/*    width: 20%;*/
    padding: 10px;
    /*float:left;*/
    margin-bottom: 30px;
}
.card {
  box-shadow: 0 8px 16px 0 rgba(0, 0, 0, 0.3);
  max-width: 300px;
  margin: auto;
  text-align: center;
  font-family: arial;
  transition: 0.3s;
}
.card:hover{
    box-shadow: 0 16px 24px 0 rgba(0, 0, 0, 0.8);
}
.price {
  color: grey;
  font-size: 22px;
}
.card button {
  border: none;
  outline: 0;
  padding: 12px;
  color: white;
  background-color: #000;
  text-align: center;
  cursor: pointer;
  width: 100%;
  font-size: 18px;
}
.card button:hover {
  opacity: 0.7;
}