/* Body styling */
body {
    background-color: #f0f8ff;   
    color: #333333;              
    font-family: Arial, Helvetica, sans-serif; 
    margin: 10px;               
}

/* Center the main page header (h1) */
h1, h2, h3 {
    text-align: center;
}

/* Center the site navigation (nav) */
nav {
    text-align: center;
}

/* Center the footer information */
footer {
    text-align: center;
}

table, td, th { border: 1px solid #000; }

/* Center the images, video and audio */

img, audio, iframe {
  display: block;       
  margin: 0 auto
}

/*centering the figure */

figure {
    text-align: center;
}