/* Reset básico */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    padding: 20px;
    background-color: #f4f4f4;
    color: #333;
  }
  
  header, section, footer {
    margin-bottom: 30px;
  }
  
  h1, h2 {
    color: #2c3e50;
  }
  
  h1 {
    text-align: center;
    margin-bottom: 20px;
  }
  
  h2 {
    margin-bottom: 15px;
  }
  
  p {
    margin-bottom: 15px;
  }
  
  code {
    background-color: #e9ecef;
    padding: 2px 5px;
    border-radius: 3px;
    font-family: monospace;
  }
  
  pre {
    background-color: #2c3e50;
    color: #ecf0f1;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 15px;
  }
  
  pre code {
    background-color: transparent;
    padding: 0;
  }
  
  /* Cores para representar as partes do box model */
  .color-box {
    display: inline-block;
    width: 20px;
    height: 20px;
    margin-right: 10px;
    border: 1px solid #000;
  }
  
  .color-content {
    background-color: #e74c3c; /* Vermelho: Conteúdo */
  }
  
  .color-padding {
    background-color: #2ecc71; /* Verde: Padding */
  }
  
  .color-border {
    background-color: #3498db; /* Azul: Border */
  }
  
  .color-margin {
    background-color: #f1c40f; /* Amarelo: Margin */
  }
  
  /* Exemplo visual do box model */
  .box-model-example {
    text-align: center;
  }
  
  .box {
    width: 200px;
    height: 100px;
    padding: 20px;
    border: 10px solid #3498db;
    margin: 30px auto;
    background-color: #2ecc71;
    position: relative;
  }
  
  .box .content {
    width: 100%;
    height: 100%;
    background-color: #e74c3c;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2em;
    font-weight: bold;
  }
  
  .example-description {
    margin-top: 15px;
  }
  
  .example-description span {
    font-weight: bold;
  }
  
  /* Estilos para as partes do box model */
  .box-model-parts .part {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
  }
  
  /* Rodapé */
  footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #ccc;
  }