styles.css

/* Formato para el contenido adicional o aside */
aside {
    width: 20%;
    padding-left: 0.5rem;
    margin-left: 0.5rem;
    float: right;
    box-shadow: inset 5px 0 5px -5px #29627e;
    font-style: italic;
    font-size: 11px;
    color: #29627e;
}

aside > p {
    margin: 0.5rem;
}

/* Formato para centrar las imágenes colocadas */
.center {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 50%;
  }

/* Imagen de fondo (background) */
html {
  min-height: 100%;
  background-image: url(paper-bg.jpg);
  background-color: rgba(255,255,255,0.1);
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
  background-attachment: fixed;
  background-blend-mode: lighten;
}

/* Personalizar bullet lists */
ul {
  list-style-type: square;
}