html,
body {
  padding: 0;
  margin: 0;
}

.side-x-side-container {
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  align-items: stretch;
  background-color: aqua;
}

.side-container {
  margin: 20px;
  padding: 10px;
  border: 3px solid blue;
  border-radius: 30px;
}

.pdf-container {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  gap: 10px;
}
.pdf-container iframe {
  height:350px;
  border: none;
}

.side-container h1 {
  text-align: center;
  border: 5px solid gold;
  border-radius: 20px;
  color: blue;
}
.side-container p {
  text-align: center;
  font-size: larger;
  color: blue;
  margin: 20px;
}
.side-container h2 {
  text-align: center;
  color: blue;
  margin-top: 20px;
  margin-bottom: 20px;
}

.left-container {
  flex: 1;
  align-content: center;
}

.left-container #x-iframe {
  width: 100%;
  height: 800px;
}

.audio-image {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.right-container {
  flex: 1;
}

.right-container #x-iframe {
  width: 100%;
  height: 800px;
}

.right-container img {
  position: absolute;
  width: 100%;
  height: 100%;
  border: 5px solid lightgreen;
  border-radius: 30px;
  z-index: 1;
}

.single-container {
  display: flex;
  flex-direction: column;
  min-height: auto;
  text-align: center;
  background-color: aqua;
}
.single-container p {
  flex: 1;
  font-size: 30px;
  font-weight: bold;
  color: red;
}
.single-container img {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 40%;
}