table,
td {
  border: 1px solid black;
}

.content {
  max-width: 960px;
  margin: auto;
  padding: 10px;
}

img {
  max-width: 100%;
  display: block;
}

.centered {
  margin: auto;
}

tbody tr:nth-child(even) {
  background-color: #ffcccc; /* Light red */
}

tbody tr:nth-child(odd) {
  background-color: #ccccff; /* Light blue */
}