body {
  /*margin: 0;
  padding: 0;*/
  background-color: #ccc;
}
img {
  vertical-align: bottom;
}
div.contenido {
  position: relative;
  background-color: #000;
  height: 290px;
  width: 100%;
  min-width: 640px;
}

div #caja {
  position: relative;
  text-align: right;
  width: 100%;
  height: 100%;
}

#foto {
  height: 100%;
  max-height: 427px;
  width: auto;
}

div .textos {
  position: absolute;
  top: 20%;
  left: 5%;
  width: 50%;
  color: #fff;
  /*font-family: Helvetica, Arial, sans-serif;*/
  font-size: large;
}
#persona {
  font-style: italic;
}

nav {
  position: absolute;
  width: 100%;
  bottom: 10px;
  z-index: 100;
}

nav ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-flow: row;
  justify-content: space-between;
  width: 100px;
  margin-left: auto;
  margin-right: auto;
}

nav a {
  display: block;
  width: 10px;
  height: 10px;
  background-color: #fff;
  border-radius: 50%;
}

nav a.on {
  background-color: #fcbf38;
}

nav a.off {
  background-color: #fff;
}

nav a:hover {
  background-color: #ff3939;
}