nav {
    background-color: #333;
    color: #fff;
    display: flex;
    justify-content: space-between;
    padding: 10px;
  }
  
  nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
  }
  
  nav li {
    margin: 0 10px;
  }
  
  nav a {
    color: #fff;
    text-decoration: none;
  }
  
  nav button {
    background-color: #fff;
    border: none;
    border-radius: 5px;
    color: #333;
    cursor: pointer;
    font-size: 16px;
    padding: 5px 10px;
  }
  
  h1 {
    font-size: 36px;
    margin: 20px 0;
    text-align: center;
  }
  
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
  }
  
  h1 {
    text-align: center;
  }

  footer{
    text-align: center;
  }
  
  form {
    margin: 20px;
  }
  
  label {
    display: block;
    margin-bottom: 5px;
  }
  
  input[type="text"],
  input[type="password"],
  textarea {
    display: block;
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-sizing: border-box;
  }
  
  button[type="submit"] {
    display: block;
    margin: 10px 0;
    padding: 10px;
    background-color: #4CAF50;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
  }
  
  button[type="submit"]:hover {
    background-color: #3e8e41;
  }
  
  #posts {
    margin: 20px;
  }
  
  #posts > div {
    margin-bottom: 20px;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
  }