* {
    box-sizing: border-box; 
  }

  body {
    display: flex;
    min-height: 100vh;
    flex-direction: row;
    margin: 0;
    font-family: Arial, sans-serif;
    padding: 20px;
    background-color: #f4f4f4;
  }

  h1 {
    text-align: center;
    color: #333;
  }

  .nav-buttons {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
  }

  button {
    padding: 10px 20px;
    margin: 5px;
    cursor: pointer;
    border: none;
    background-color: #007bff;
    color: white;
    font-size: 16px;
    border-radius: 5px;
  }

  button:hover {
    background-color: #0056b3;
  }

  #container {
    display: flex;
    flex-direction: column;
    flex: 5;
  }

  #tool-container {
    display: flex;
    flex-direction: row;
  }

  #dynamic-tool {
    display: flex;
    flex-direction: column; /* Stack articles vertically */
    flex: 5;
  }

  #tool-container > #dynamic-tool {
    min-height: 60vh;
  }

  #tool-container > aside {
    flex: 1;
  }

  header, footer {
    background: white;
    width: 100%;
  }

  header, footer, article, nav, aside {
    padding: 1em;
  }