section.customizador {
  position: relative;
  overflow: hidden;
  background: url("img/building.png") center/cover no-repeat;
  color: #fff; /* garanta contraste */
}
section.customizador::before {
  content: "";
  position: absolute; inset: 0;
  background: rgba(0,0,0,.28); /* leve overlay p/ legibilidade */
}
section.customizador > * { position: relative; } /* mantém texto acima do overlay */


body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #fdfdfd;
    color: #333;
}

header {
    background-color: #ffffff;
    padding: 20px;
    text-align: center;
    box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}

nav a {
    margin: 0 15px;
    text-decoration: none;
    color: #444;
    font-weight: bold;
}

.hero {
    text-align: center;
    padding: 40px 20px;
}

.hero h2 {
    font-size: 1.2em;
    color: #666;
}

.hero h3 {
    font-size: 2.2em;
    font-weight: 700;
}

.hero span {
    color: #999;
}

section {
    padding: 40px 20px;
    text-align: center;
}

section img {
    max-width: 90%;
    height: auto;
    margin-top: 20px;
    border-radius: 12px;
}

footer {
    background-color: #eee;
    text-align: center;
    padding: 20px;
    font-size: 0.9em;
}