body {
  font-family: Arial, sans-serif;
  margin: 20px;
}

h1, h2 {
  text-align: center;
}
.columns {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  margin-bottom: 30px;
}
.columns > div {
  background: #e0e0e0;
  padding: 20px;
  text-align: center;
  border: 1px solid #ccc;
}
@media (max-width: 600px) {
  .columns {
    grid-template-columns: 1fr;
  }
}
.simple-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 auto;
}
.simple-table th {
  border: 1px solid #999;
  padding: 10px;
  text-align: center;
  background: black;
  color: gray;
}
.simple-table td {
  border: 1px solid #999;
  padding: 10px;
  text-align: center;
}
.simple-table td:hover {
    background-color: darkgray;
    text-transform:uppercase;
    text-underline-position: below;

}