/* Reset básico */
body, ul, li {
  margin: 0;
  padding: 0;
  list-style: none;
}


nav {
  background: #222;        
  padding: 15px 0;          
  text-align: center;       
  position: fixed;          
  width: 100%;              
  top: 0;                   
  left: 0;
  z-index: 1000;
}


nav ul li a {
  color: white;         
  text-decoration: none;   
  font-size: 18px;
  font-weight: bold;
  padding: 10px 20px;
  transition: 0.3s;
  background-color: white(0, 0, 0, 0.7); 
    padding: 25px; 
    border-radius: 8px; 
    margin-bottom: 25px; 
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); 
}

nav ul li a:hover {
  color: wheat;          
}


main {
  padding-top: 80px;     
  text-align: center;     
}

body {
    background-image: url('https://img.freepik.com/fotos-premium/renderizacao-3d-do-logotipo-do-github-em-vidro-preto-transparente-flutuando-vertical-com-uma-inclinacao-lateral-de-neon-branco_1020495-782735.jpg?semt=ais_hybrid&w=740&q=80'); /* Define imagem de fundo */
    background-size: cover; 
    background-repeat: no-repeat;
    background-position: center; 
    background-attachment: fixed; 
    min-height: 100vh; 
    margin: 0; 
    font-family: Arial, sans-serif; 
    color: white; 
    display: flex;
    flex-direction: column; 
}


body::before {
    content: ""; 
    position: fixed;
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%; 
    background-color: rgba(0, 0, 0, 0.6); 
    z-index: -1; 
}