body {
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
    text-align: center;
    font-family: sans-serif;
}
.limit {
    max-width: 50%;
    text-align: center;
}
button {
    width: 30%;
    font-size: xx-large;
}

hr {
    border-top: 1px solid black;
    width: 100%;
}

.modal {
  display: none;
  position: fixed;
  z-index: 1;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%; 
  overflow: auto;
  background-color: rgb(0,0,0);
  background-color: rgba(0,0,0,0.4);
}

.modal-content {
  background-color: #fefefe;
  margin: 5% auto; /* 15% from the top and centered */
  padding: 20px;
  border: 1px solid #888;
  width: 40%;
}

.close {
  color: #aaa;
  float: right;
  font-size: 28px;
  font-weight: bold;
}

.close:hover,
.close:focus {
  color: black;
  text-decoration: none;
  cursor: pointer;
}