body {
  margin: 0;
  display: flex;
  justify-content: space-between;
  min-height: 100vh;
  flex-direction: column;
}

header,
footer {
  color: aliceblue;
  text-align: center;
  background-color: black;
  padding: 20px 0px;
}

.container {
  display: flex;
  flex: 1;
  align-items: stretch; /* Ensure children stretch to full height */
  justify-content: space-between;
}

.left,
.right {
  background-color: palevioletred;
  width: 200px;
  padding: 20px;
  display: flex; /* Ensure the content inside stretches */
  flex-direction: column; /* Stack content vertically */
}

main {
  flex: 1; /* Allow the main content to take remaining space */
  background-color: lightgray; /* Optional: Add a background color to main */
  padding: 20px; /* Optional: Add padding to main */
}

@media only screen and (max-width: 960px) {
  .container {
    flex-direction: column;
  }
  .container,
  .left,
  .right {
    width: 100%;
    justify-content: space-between;
  }
}