<div id="wrap">
  <div class="center">
    <div class="section">

      <div id="titled">
        <div class="titled" data-title="title#1">Title#1</div>
        <div class="titled" data-title="title#2">Title#2</div>
        <div class="titled" data-title="title#3">Title#3</div>
        <div class="titled" data-title="title#4">Title#4</div>
        <div class="titled" data-title="title#5">Title#5</div>
      </div>

    </div>
  </div>
</div>

// autoprefixer: true

html,
body {
  margin: 0;
  padding: 0;
  font-family: sans-serif;
  font-size: 16px;
  line-height: 1.4;
  color: #555;
  background: #fff;
}

* {
  box-sizing: border-box;
}

#wrap {
  position: relative;
  padding-top: 60px;
  transition: padding-top .3s ease;
}

.section {
  padding: 40px;
}

.center {
  width: 100%;
  max-width: 1200px;
  margin: auto;
}

#titled {
  display: flex;
}

.titled {
  position: relative;
  padding: 10px 20px;
  margin: 5px;
  background: #eee;
  cursor: default;

  &::before {
    position: absolute;
    z-index: 9;
    top: 100%;
    left: 100%;
    margin: -10px 0 0 -20px;
    padding: 5px 10px;
    background: #fff;
    box-shadow: 0 5px 10px fade(#000, 20%);
    content: attr(data-title);
    transition: .2s ease;
    transition-property: opacity, visibility;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    animation: showTitles 5s linear;
    
    @keyframes showTitles {
      0%, 90% {
        visibility: visible;
        opacity: 1;
      }
      
      100% {
        visibility: hidden;
        opacity: 0;
      }
    }
  }
  
  &:hover {
    &::before {
      opacity: 1;
      visibility: visible;
    }
  }
}