Inténtalo tú mismo - W3.CSS slideshow

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<title>W3.CSS</title>
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<div class="w3-display-container mySlides">
  <img src="img_fjords.jpg" style="width:100%">
  <div class="w3-display-bottomleft w3-large w3-container w3-padding-hor-16 w3-black">
    Trolltunga, Norway
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<div class="w3-display-container mySlides">
  <img src="img_lights.jpg" style="width:100%">
  <div class="w3-display-bottomright w3-large w3-container w3-padding-hor-16 w3-black">
    Northern Lights, Norway
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<div class="w3-display-container mySlides">
  <img src="img_mountains.jpg" style="width:100%">
  <div class="w3-display-topleft w3-large w3-container w3-padding-hor-16 w3-black">
    Beautiful Mountains
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<div class="w3-display-container mySlides">
  <img src="img_forest.jpg" style="width:100%">
  <div class="w3-display-topright w3-large w3-container w3-padding-hor-16 w3-black">
    The Rain Forest
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<div class="w3-display-container mySlides">
  <img src="img_mountains.jpg" style="width:100%">
  <div class="w3-display-middle w3-large w3-container w3-padding-hor-16 w3-black">
    Mountains!
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