css - Text appear from left to right -

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i want caption of image (which not necessary real caption) appear when image hovered. text should appear left right it's container should grow on x axis image hovered. have been able make text appear on hover transition effect stuck.
have tried:

css:

.morbid {   display: none;   margin-left:10px; }  a:hover + .morbid {   position:relative;   display: block; }

html:

<a>   <img src='.../goals/sia.png'>  </a> <div class="morbid"> text appear hover mouse on image. </div>

actually whole div must grow, text remaining static , want text hidden unless image hovered.

you cannot transition display property's change of value. full list of properties can animated available in spec.

for content grow , appear need transition max-width (or width, if can set fixed width element) done in below snippet.

.morbid {    width: auto;    max-width: 0%;    white-space: nowrap;    overflow: hidden;    transition: max-width 1s linear;  }  a:hover + .morbid {    max-width: 100%;  }
<a href="#">    <img src='http://lorempixel.com/400/200'>  </a>  <div class="morbid">    text appear hover mouse on image.  </div>

alternately, if want text grow center can make use of absolute positioning transform in below snippet.

.container {    position: relative;    width: 400px;  }  .morbid {    position: absolute;    left: 50%;    max-width: 0%;    white-space: nowrap;    overflow: hidden;    transform: translatex(-50%);    transition: max-width 1s linear;  }  a:hover + .morbid {    max-width: 100%;  }
<div class="container">    <a href="#">      <img src='http://lorempixel.com/400/200'>    </a>    <div class="morbid">      text appear hover mouse on image.    </div>  </div>


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