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HTML Code

<p>This is a simple HTML code</p>

CSS Code

<style>
/* Container */
.code-container {
  position: relative;
  background: #ffffff;
  border: 1px solid #dcdcdc;
  border-radius: 8px;
  padding: 10px;
  margin: 20px 0;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
</style>