    h1, h2, h3, h4, h5, h6 {
    font-family: 'Arial', sans-serif;
    }
    h1 {
    background-color: #f0f0f0; /* Light gray */
    padding: 5px 10px;
    border-radius: 5px;
    text-align: center;
    }
    h2 {
    background-color: #f0f0f0; /* Light gray */
    padding: 5px 10px;
    border-radius: 3px;
    text-align: center;
    }
    h3 {
    background-color: #f0f0f0; /* Light gray */
    padding: 5px 10px;
    border-radius: 1px;
    }
    body {
    font-family: 'Arial', sans-serif;
    font-size: 20px;
    }
    footer {
      text-align: center;
      background-color: #f0f0f0;
      padding: 10px 0;
    }
    a.button {
      display: inline-block;
      padding: 10px 20px;
      text-align: center;
      text-decoration: none;
      background-color: #3498db;
      color: #ffffff;
      border-radius: 5px;
      border: 2px solid #3498db;
      transition: background-color 0.3s, color 0.3s;
    }
    
    a.button:hover {
      background-color: #ffffff;
      color: #3498db;
    }
    .text-container {
      max-width: 800px; /* Set your desired maximum width in pixels */
      margin: 0 auto;   /* Center the container horizontally */
      padding: 20px;
    }
    .text-container::after {
      content: "";
      display: table;
      clear: both;
    }
    .colored-container {
      position: relative;
      padding-left: 40px; /* Adjust this value based on your desired left rectangle width */
    }
    .colored-container::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 20px; /* Adjust this value based on your desired rectangle width */
      height: 100%; /* Cover the full height of the container */
      background-color: #f0f0f0; /* Replace with your desired color */
    }
   .big_button {
      margin-top: 20px;
   
	  /* Set width and height */
	  width: 150px;
	  height: 50px;

	  /* Adjust padding for internal spacing */
	  padding: 10px 20px;

	  /* Set font size and other styles */
	  font-size: 16px;
	  font-weight: bold;
	  color: #fff;
	  background-color: #3498db;
	  border: 2px solid #3498db;
	  border-radius: 5px;
	  cursor: pointer;
	}
    .big_button:hover {
      background-color: #fff;
      color: #3498db;
    }