<link href="https://fonts.googleapis.com/css?family=Lato" rel="stylesheet">

<div class="content">
  <div class="content__container">
    <p class="content__container__text">
      Hello
    </p>
    
    <ul class="content__container__list">
      <li class="content__container__list__item">world !</li>
      <li class="content__container__list__item">bob !</li>
      <li class="content__container__list__item">users !</li>
      <li class="content__container__list__item">everybody !</li>
    </ul>
  </div>
</div>
body {
  width: 100%;
  height: 100%;
  position: fixed;
  background-color: #34495e;
}

.content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  height: 160px;
  overflow:hidden;
  
  font-family: 'Lato', sans-serif;
  font-size: 35px;
  line-height: 40px;
  color: #ecf0f1;
  
  &__container {
    font-weight: 600;
    overflow: hidden;
    height: 40px;
    padding: 0 40px;

    &:before {
      content: '[';
      left: 0;
    }

    &:after {
      content: ']';
      position: absolute;
      right: 0;
    }

    &:after, &:before {
      position: absolute;
      top: 0;
      
      color: #16a085;
      font-size: 42px;
      line-height: 40px;
      
      -webkit-animation-name: opacity;
      -webkit-animation-duration: 2s;
      -webkit-animation-iteration-count: infinite;
      animation-name: opacity;
      animation-duration: 2s;
      animation-iteration-count: infinite;
    }

    &__text {
      display: inline;
      float: left;
      margin: 0;
    }

    &__list {
      margin-top: 0;
      padding-left: 110px;
      text-align: left;
      list-style: none;
      
      -webkit-animation-name: change;
      -webkit-animation-duration: 10s;
      -webkit-animation-iteration-count: infinite;
      animation-name: change;
      animation-duration: 10s;
      animation-iteration-count: infinite;

      &__item {
        line-height:40px;
        margin:0;
      }
    }
  }
}

@-webkit-keyframes opacity {
  0%, 100% {opacity:0;}
  50% {opacity:1;}
}

@-webkit-keyframes change {
  0%, 12.66%, 100% {transform:translate3d(0,0,0);}
  16.66%, 29.32% {transform:translate3d(0,-25%,0);}
  33.32%,45.98% {transform:translate3d(0,-50%,0);}
  49.98%,62.64% {transform:translate3d(0,-75%,0);}
  66.64%,79.3% {transform:translate3d(0,-50%,0);}
  83.3%,95.96% {transform:translate3d(0,-25%,0);}
}

@-o-keyframes opacity {
  0%, 100% {opacity:0;}
  50% {opacity:1;}
}

@-o-keyframes change {
  0%, 12.66%, 100% {transform:translate3d(0,0,0);}
  16.66%, 29.32% {transform:translate3d(0,-25%,0);}
  33.32%,45.98% {transform:translate3d(0,-50%,0);}
  49.98%,62.64% {transform:translate3d(0,-75%,0);}
  66.64%,79.3% {transform:translate3d(0,-50%,0);}
  83.3%,95.96% {transform:translate3d(0,-25%,0);}
}

@-moz-keyframes opacity {
  0%, 100% {opacity:0;}
  50% {opacity:1;}
}

@-moz-keyframes change {
  0%, 12.66%, 100% {transform:translate3d(0,0,0);}
  16.66%, 29.32% {transform:translate3d(0,-25%,0);}
  33.32%,45.98% {transform:translate3d(0,-50%,0);}
  49.98%,62.64% {transform:translate3d(0,-75%,0);}
  66.64%,79.3% {transform:translate3d(0,-50%,0);}
  83.3%,95.96% {transform:translate3d(0,-25%,0);}
}

@keyframes opacity {
  0%, 100% {opacity:0;}
  50% {opacity:1;}
}

@keyframes change {
  0%, 12.66%, 100% {transform:translate3d(0,0,0);}
  16.66%, 29.32% {transform:translate3d(0,-25%,0);}
  33.32%,45.98% {transform:translate3d(0,-50%,0);}
  49.98%,62.64% {transform:translate3d(0,-75%,0);}
  66.64%,79.3% {transform:translate3d(0,-50%,0);}
  83.3%,95.96% {transform:translate3d(0,-25%,0);}
}

// 6 is the number of animation.
// Here, there are 4 lines :

// 1 to 2
// 2 to 3
// 3 to 4
// 4 to 3
// 3 to 2
// 2 to 1

// 6x + 6y = 100 (100% duration)

// HERE : 
// y = 4 -> Animation between two lines
// x = 12.66 -> Time spent on a line

// You can define a value and calculate the other if you want change speed or the number of lines
View Compiled 
// Twitter @YoannHELIN
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