.controls {
    margin-top: 1em;
    padding: 0.5em 0;
    overflow: auto;
  }
  
  .controls button {
    /*display: inline-block;*/
    background: #8f7a66;
    border: 0;
    border-radius: 3px;
    padding: 0 20px;
    color: #f9f6f2;
    height: 40px;
    line-height: 42px;
    font-family: "Clear Sans", "Helvetica Neue", Arial, sans-serif;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
  }
  
  .controls button:hover {
      background: #ad957f;
  } 
  
  .ai-button, #feedback-container {
    line-height: 40px;
    font-size: 36px;
  }
  
  #run-button-container {
    float: right;
  }
  
  #hint-button-container, #feedback-container {
    float: left;
  }
  
  #feedback-container {
    background: #8f7a66;
    color: #f9f6f2;
    margin-left: 1em;
    font-weight: bold;
  }  
  .last-section {
  width: 100%;
  max-width: 1140px; /* Matches Bootstrap's container max-width for large screens */
  margin-right: auto; 
  margin-left: auto;
  padding-right: 15px;
  padding-left: 15px;
  padding: 2rem;
  
} 
/*  shadow code is start from here */
.container.last-section {
  background-color: #f2f2f21a;
  color: #ffffff;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.397); /* soft white shadow for dark bg */
  max-width: 1000px;
  margin: 0px auto;
  line-height: 1.7;
  font-family: Arial, sans-serif;
}
.container.last-section h2 {
  color: #e0e0e0;
}
.container.last-section a {
  color: #ff4c4c;
  text-decoration: none;
}
.container.last-section a:hover {
  text-decoration: underline;
}