table, th, td {
  border: solid;
  border-color: #ab2f0d;
  border-spacing: 1px;
  border-collapse: collapse;
  margin-left: auto;
  margin-right: auto;
  width: 60%;
  
}

th, td {
  background-color: rgba(0, 0, 0, 0.5);
  height: 250px;
}

div.flex-container {
  display: flex;
  flex-direction: column;
  height: 1000px;
  border-style:groove ;
  background-color: rgba(0, 0, 0, 0.5);
  border-color: #ab2f0d;
  border-spacing: 1px;
  margin-left: auto;
  margin-right: auto;
}

div.flex-container > div {
  margin: 30px;
}

/* Use media query and show the flex items vertically if screen width is less than 600px */
@media screen and (max-width:500px) {
  div.flex-container {
    flex-direction: column;
  }
}