body {
  background-color: #6948a5;
  background-image: url('city.png'); 
  color: #FFFFFF;
  font-family: 'Courier New', Courier, monospace;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
  background-position: center;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.container {
  width: 80%;
  max-width: 800px;
  margin: 0 auto;
  background-color: rgba(116, 101, 193, 0.9);
  padding: 20px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

header, footer {
    text-align: center;
    margin: 20px 0;
}
nav a {
    color: #FFFF00;
    text-decoration: none;
    padding: 0 10px;
}
#content {
    max-width: 800px;
    margin: auto;
    padding: 20px;
    background-color: rgba(0, 0, 0, 0.5);
}

#buttons {
    image-rendering: auto;
    image-rendering: crisp-edges;
    image-rendering: pixelated;
    image-rendering: -webkit-optimize-contrast;
} 

#content img {
    max-width: 80%;
    height: auto;
}

.center-image {
    display: block;
    max-width: 70%;
    margin-left: auto;
    margin-right: auto;
}

.center-image-container {
    text-align: center;
}