html - CSS: Fade-in transition in input text? -


is there way write css transition fade in input text element while user typing?

currently, text can fade in within normal html text element because can tell transition 0 1 opacity; input text doesn't exist before user types in.

so example, if type in username, letters type fade in, each 1 going 0 1 opacity in .3 seconds.

i've tried using transition , animation, want keep within css.

a possible way achieve similar effect: create partially transparent overlay using linear-gradient , gradually reveal type moving mask position. 

 <div id='container'>     <input type='text'></input>     <div class='fader'></div>  </div>  $("input").on("keydown", function(e) {     var width = $("input").val().length + 1;     $(".fader").css("left", (width * 8) + 3); });   #container {     position: relative;     height: 25px;     width: 400px; }  input {     width: 100%; }  input, .fader {     display: block;     position: absolute;     top: 0; left: 0; right: 0; bottom: 0;     font-family: monospace; }  .fader {     top: 2px;     bottom: 4px;     pointer-events: none;     background: linear-gradient(90deg, transparent 0px, white, 15px, white 100%);     transition: left 1s ease; }

here's looks fiddle:

http://jsfiddle.net/go7trwzx/1/


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