body {
        background-color: orange;
        background-image: linear-gradient(135deg, #ff4500, #ed9c1a);
        font-family: Arial, sans-serif;
        text-align: center;
  margin: 20px auto;
  width: 60%;
      }
.sidebar {
  height: 100%;
  width: 160px;
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  background-color: rgba(17, 17, 17, 0.9);
  overflow-x: hidden;
  padding-top: 20px;
}

.sidebar a {
  padding: 6px 8px 6px 16px;
  text-decoration: none;
  font-size: 20px;
  color: #ffd700;
  display: block;
  transition: color 0.3s ease;
}
.sidebar h1 {
  color: orange;
}

.sidebar a:hover {
  color: #fff8b0;
  text-decoration: none;
  background-color: rgba(255, 215, 0, 0.1);
}

.main {
  margin-left: 160px;
  padding: 0px 10px;
}
  ul {
  margin-left: 0px;
  font-size: 1.5rem;
  color: #fff8b0;
  line-height: 1.8;
  text-align: left;
}

.openbtn {
  font-size: 20px;
  cursor: pointer;
  background-color: #111;
  color: white;
  padding: 10px 15px;
  border: none;
}

.openbtn:hover {
  background-color: #444;
}

#main {
  transition: margin-left .5s;
  padding: 16px;
}

/* On smaller screens, where height is less than 450px, change the style of the sidenav (less padding and a smaller font size) */
@media screen and (max-height: 450px) {
  .sidebar {padding-top: 15px;}
  .sidebar a {font-size: 18px;}
}
      #titleTop {
        color: orange;
        font-size: 4.5rem;
        margin: 20px 0;
        text-shadow: 4px 4px 10px rgba(0, 0, 0, 0.5);
        width: 100%;
      }
      p {
        margin: 20px auto;
        font-size: 1.5rem;
        color: #fff8b0;
        line-height: 1.8;
      }
      a {
        color: #ffd700;
        text-decoration: none;
        font-weight: bold;
      }
      a:hover {
        text-decoration: underline;
      }
      h1 {
        color: #fff8b0;
        font-size: 3rem;
      }
button {
  font-size: 1.5rem;
  padding: 1.5%;
  margin: 1%;
  width: calc(50% - 20px);
  background: linear-gradient(to bottom, #ffd700, #ffa500);
  border: 2px solid orange;
  border-radius: 8px;
  cursor: pointer;
  transition: 0.3s;
}
button:hover {
  background: linear-gradient(to bottom, #ffa500, #ff8c00);
  transform: scale(1.05);
}
iframe {
  background-color: #f4f4f4; /* Light background to match the page */
  border: 2px solid #ffd700; /* Gold border to match your theme */
  border-radius: 8px; /* Optional: rounded corners for iframe */
  padding: 20px; /* Add some padding inside the iframe */
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2); /* Optional: shadow effect */
  width: 100%; /* Full width of the container */
  margin-top: 20px; /* Margin to separate from the rest of the content */
  font-family: Arial, sans-serif; /* Match the font of the page */
}
code {
  display: inline-block; /* Make the code look like inline but distinct */
  background-color: #333333; /* Dark background for code */
  color: #f4f4f4; /* Light text color for readability */
  padding: 2px 6px; /* Padding around the code */
  border-radius: 4px; /* Rounded corners for a nice look */
  font-family: Consolas, "Courier New", monospace; /* Monospace font for code */
  font-size: 1.2rem; /* Slightly larger font size for better visibility */
}
 table.physics-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 16px;
  }
  table.physics-table th, table.physics-table td {
    border: 3px solid #fff8b0;
    padding: 10px;
    text-align: left;
  }
  table.physics-table th {
    background-color: orange;
  }