html5 - CSS3 transition glitch in Chrome -


i have simple modal, opens upon :checked input. in firefox , ie transition animation works fine, in chrome glitches (effect not smooth) when shows upon checking input.

demo fiddle: jsfiddle

when remove visibility: hidden works fine, modal blocks rest of page under neath - no text can selected, no buttons clicked etc.

any ideas on how make transition smooth in chrome?

answer

you declared transform: none; on modal div. define rotationx instead, animation has starting , ending point. solves animation issue:

input#switch:checked ~ #test > div {     transform: rotatex(0deg); } 

http://jsfiddle.net/s8hts3v7/9/

code snippet

#test {    position: fixed;    top: 0;    right: 0;    bottom: 0;    left: 0;    width: 100%;    height: 100%;    background: rgba(0,0,0,0.8);    z-index: 9999999;    visibility: hidden;  }  input#switch:checked ~ #test {    visibility: visible;  }  #test > div {    background: #fff;    width: 300px;    height: 100px;    padding: 30px;    position: absolute;    top: 0;    right: 0;    bottom: 0;    left: 0;    margin: auto;    transform: perspective(300px) rotatex(-90deg);    transform-origin: top center;    transition: 0.4s ease;  }  input#switch:checked ~ #test > div {    transform: rotatex(0deg);  }  #test > div label {    background: #000;    color: #fff;    display: block;    text-align: center;    padding: 8px;    margin-top: 20px;    cursor: pointer;  }
<input id="switch" type="checkbox" name="test-chkbox" />  <label for="switch">open modal</label>    <div id="test">      <div>lorem ipsum dummy text of printing , typesetting industry.      <label for="switch">close modal</label>      </div>  </div>


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