body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #f0f0f0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

#container {
  display: grid;
  grid-template-areas:
    "header header header"
    "content1 content2 content3"
    "content4 content5 content3"
    "content6 content6 content7"
    "footer footer footer";
  grid-template-columns: 1fr 1fr 1fr;
  grid-auto-rows: minmax(120px, auto);
  gap: 12px;
  max-width: 1000px;
  width: 95%;
  padding: 20px;
  background-color: white;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.header {
  grid-area: header;
  background-color: #f8b400;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2em;
  font-weight: bold;
  color: white;
  padding: 10px;
}

.footer {
  grid-area: footer;
  background-color: #333;
  color: white;
  text-align: center;
  padding: 12px;
  font-size: 1em;
}

.content1 {
  grid-area: content1;
  background-color: #d3d3d3;
  padding: 10px;
}

.content2 {
  grid-area: content2;
  background-color: #ffa500;
  padding: 10px;
  color: #000;
}

.content3 {
  grid-area: content3;
  background-color: #ff4c4c;
  padding: 10px;
  color: white;
}

.content4 {
  grid-area: content4;
  background-color: #ffa500;
  padding: 10px;
}

.content5 {
  grid-area: content5;
  background-color: #87ceeb;
  padding: 10px;
}

.content6 {
  grid-area: content6;
  background-color: #ffa500;
  padding: 10px;
}

.content7 {
  grid-area: content7;
  background-color: #ffcc00;
  padding: 10px;
}

iframe, img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

h3 {
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1em;
  color: rgb(0, 0, 0);
  padding: 10px;
}

@media screen and (max-width: 768px) {
  #container {
    grid-template-areas:
      "header"
      "content1"
      "content2"
      "content3"
      "content4"
      "content5"
      "content6"
      "content7"
      "footer";
    grid-template-columns: 1fr;
  }
}