/* CSS Reset */
body, header, nav, main, footer, img, h1 {
  margin: 0;
  padding: 0;
}

/* Global Styles */
body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

/* Navigation */
nav ul {
  list-style: none;
  display: flex;
  background: #333;
  padding: 10px;
}

nav ul li {
  margin-right: 15px;
}

nav ul li a {
  color: white;
  text-decoration: none;
}

/* Layout with Float */
.container {
  width: 80%;
  margin: auto;
  overflow: hidden;
}

.float-left {
  float: left;
  width: 50%;
}

.float-right {
  float: right;
  width: 50%;
}

.clear {
  clear: both;
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    width: 100%;
  }
  nav ul {
    flex-direction: column;
    text-align: center;
  }
  .float-left, .float-right {
    width: 100%;
    float: none;
  }
}

/* ID and Class Example */
#unique-section {
  background: #f4f4f4;
  padding: 20px;
}

.highlight {
  color: red;
  font-weight: bold;
}

/* Rounded Corners */
.rounded {
  border-radius: 10px;
}

/* Span Styling */
.important {
  color: blue;
  font-weight: bold;
}