javascript - How to achieve this awesome CSS animation -


i'm trying animation using css | css3 , javascript. show in image below, it's difficult me this. please me out in this. here code have. 

    body {        background-color: #222;      }      .container {        background-image: url(test.jpg);        height: 96vh;        width: 100%;      }      .box {        background-color: #fff;        height: 98vh;        width: 100%;      }      .big {        font-size: 17vw;        background: url(http://viralsweep.com/blog/wp-content/uploads/2015/02/unsplash.jpg) 33px 659px;        -webkit-text-fill-color: transparent;        -webkit-background-clip: text;        padding-top: 24vh;        margin-top: 0;        text-align: center;        animation: opac 2s infinite;      }  @keyframes opac {    0%, 100% {      /*rest move*/      }    50% {    /*move distance in y position*/    }  }
<div class="container">    <div class="box">      <h1 class="big">try this</h1>    </div>    <!--end of box-->  </div>  <!--end of conatiner-->

and target: enter image description here

i came solution based on original code using -webkit-text-fill-color , -webkit-background-clip-text , added font-size , negative text-indent animation. negative text-indent needed keep text "centered" within element because text within elements wants bump against left edge.

  * {      box-sizing: border-box;    }      html, body {      height: 100%;      margin: 0;      padding: 0;    }      #container {      height: 160px;      overflow: hidden;      position: absolute;      width: 600px;    }      #image {      animation: scale 3000ms linear infinite;      background: url(http://viralsweep.com/blog/wp-content/uploads/2015/02/unsplash.jpg);      bottom: 0;      font: 96px "arial";      font-weight: bold;      left: 0;      line-height: 160px;      overflow: hidden;      position: absolute;      right: 0;      text-align: center;      top: 0;      text-transform: uppercase;      white-space: nowrap;      -webkit-text-fill-color: transparent;      -webkit-background-clip: text;    }      @keyframes scale {      0% {        font-size: 66px;        text-indent: 0;      }      16% {        font-size: 132px;        text-indent: 0;      }      80% {        font-size: 330px;        text-indent: -500px;      }      100% {        font-size: 10000px;        text-indent: -25300px;      }    }
<div id="container">    <div id="image">try this</div>  </div>

basically, i'm adjusting text-indent font-size increases middle "t" stays centered (it's not in center though) , text becomes big (10,000 pixels!) "t" "reveal" effect filling space.


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