body {
    margin: 0;
    padding: 0;
    background: #232323;
    color: #cdcdcd;
    font-family: "Avenir Next", "Avenir", sans-serif;
  }
  
  main {
    width: calc(100% - 240px);
    max-width: 680px;
    margin: 100px auto;
  }
  
  p {
    font-size: 18px;
    line-height: 28px;
  }
  
  * {
    scroll-behavior: smooth;
  }
  
  header {
    background-color: #232323;
    color: #cdcdcd;
    padding: 20px;
    text-align: center;
    position: relative;
  }
  
  header .logo {
    font-size: 24px;
    font-weight: bold;
  }
  
  .container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  #checkbox-menu {
    position: absolute;
    opacity: 0;
  }
  
  label {
    cursor: pointer;
    position: relative;
    display: block;
    height: 22px;
    width: 30px;
  }
  
  label span {
    position: absolute;
    display: block;
    height: 5px;
    width: 100%;
    border-radius: 30px;
    background: #cdcdcd;
    transition: 0.25s ease-in-out;
  }
  
  label span:nth-child(1) {
    top: 0;
  }
  
  label span:nth-child(2) {
    top: 8px;
  }
  
  label span:nth-child(3) {
    top: 16px;
  }
  
  #checkbox-menu:checked + label span:nth-child(1) {
    transform: rotate(-45deg);
    top: 8px;
  }
  
  #checkbox-menu:checked + label span:nth-child(2) {
    opacity: 0;
  }
  
  #checkbox-menu:checked + label span:nth-child(3) {
    transform: rotate(45deg);
    top: 8px;
  }
  
  .nav {
    display: none;
  }
  
  #checkbox-menu:checked + label + .nav {
    display: block;
  }
  
  .nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }
  
  .nav-list li {
    margin-bottom: 10px;
  }
  
  .nav-list a {
    color: #cdcdcd;
    text-decoration: none;
  }
  
  .nav-list a:hover {
    color: tomato;
  }
  
  section {
    padding: 20px;
  }
  
  h2 {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 10px;
  }
  
  .curso, .servico {
    background-color: #f7f7f7;
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid #ddd;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  }
  
  .curso h3, .servico h3 {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 10px;
  }
  
  footer {
    background-color: #232323;
    color: #cdcdcd;
    padding: 10px;
    text-align: center;
    clear: both;
  }