body {
  font-family: sans-serif;
  display: flex;
  justify-content: center;
  padding: 20px;
}

.main-content {
  position: relative;
  width: 600px; /* ширина центрального блока */
}
.note {
  position: absolute;
  max-width: 220px;
  background: #fff7b2;
  padding: 15px;
  border: 1px solid #e6d600;
  box-shadow: 2px 2px 8px rgba(0,0,0,0.15);
  font-size: 0.9em;
  z-index: 5;
}

.note[data-side="left"] {
  left: -320px; /* 200px текст + 100px отступ + ширина стикера */
}
.note[data-side="right"] {
  right: -320px;
}

.note-marker {
  cursor: pointer;
  font-size: 0.9em;
  margin: 0 3px;
}
.note img {
  max-width: 100%;
  display: block;
  margin-top: 8px;
}
.note.highlight {
  animation: noteHighlight 1s ease;
}

@keyframes noteHighlight {
  0% { box-shadow: 0 0 5px 3px yellow; }
  100% { box-shadow: 2px 2px 8px rgba(0,0,0,0.15); }
}

.quote {
  background: #f0f0f0;
  padding: 10px 15px;
  margin: 15px 0;
  border-left: 4px solid #ccc;
  font-style: italic;
}