Safari hides an element when using translate3d translation in another transition

Question

I noticed that in the latest Safari 11.1 (works fine in Chrome and Firefox), the transition element translate3ddisappears on the screen when applied to another element that also contains the transition translate3d.

Playback here: https://jsfiddle.net/chq2qfm8/66/

Video:

Answer 1

It seems that Safari is a new IE, but you can use translateYthat is also "3d":

Update because PO “may have X-movement too” I added a component X.

init();

function init() {
  bindEvents();
}

function bindEvents() {
  document.querySelector('.scrollUp').addEventListener('click', scrollUp, false);
  document.querySelector('.scrollDown').addEventListener('click', scrollDown, false);

}

function scrollDown() {
  document.querySelector('.panels')
  .style.transform = 'translateX(100px) translateY(-' + window.innerHeight + 'px)';

  document.querySelector('.panel1 .panel-bg')
  .style.transform = 'translateX(100px) translateY(-20px)';


  document.querySelector('.panel2 .panel-bg')
  .style.transform = 'translateX(-100px) translateY(-20px)';
}

function scrollUp() {
  document.querySelector('.panels')
  .style.transform = 'translateX(0) translateY(0)';

  document.querySelector('.panel1 .panel-bg')
  .style.transform = 'translateX(-100px) translateY(-20px)';

  document.querySelector('.panel2 .panel-bg')
  .style.transform = 'translateX(100px) translateY(-20px)';

}

html,
body {
  overflow: hidden;
  height: 100%;
  padding: 0;
  margin: 0;
  color: red;
  font-weight: bold;
}

.panels {
  position: relative;
  width: 100%;
  height: 100%;
  transition: all 1000ms ease;
}

.panel,
.panel-bg {
  width: 100%;
  height: 100%;
}

.panel-bg {
  background-image: url(https://www.w3schools.com/howto/img_fjords.jpg);
  background-size: cover;
  transition: transform 700ms ease;
}

.panel2 .panel-bg {
  background-image: url('https://camo.mybb.com/e01de90be6012adc1b1701dba899491a9348ae79/687474703a2f2f7777772e6a71756572797363726970742e6e65742f696d616765732f53696d706c6573742d526573706f6e736976652d6a51756572792d496d6167652d4c69676874626f782d506c7567696e2d73696d706c652d6c69676874626f782e6a7067');
}

.panel {
  overflow: hidden;
}

.panel-bg {
  top: 0;
  left: 0;
  width: 100%;
}

.actions {
  position: fixed;
  z-index: 777;
  left: 20px;
  top: 20px;
}

.acions button {
  display: inline-block;
}

<div class="actions">
  <button class="scrollDown">
        Scroll down
    </button>
  <button class="scrollUp">
        Scroll up
    </button>
</div>

<div class="panels">
  <div class="panel panel1">
    <div class="panel-bg">
      TEST <br>TESTTEST <br>TESTTEST <br>TESTTEST <br>TESTTEST <br>TEST<br>TESTTEST <br>TESTTEST <br>TESTTEST <br>TESTTEST <br>TEST</div>
  </div>
  <div class="panel panel2">
    <div class="panel-bg">
      TEST <br>TESTTEST <br>TESTTEST <br>TESTTEST <br>TESTTEST <br>TEST<br>TESTTEST <br>TESTTEST <br>TESTTEST <br>TESTTEST <br>TEST
    </div>
  </div>
</div>

Run codeHide result

Answer 2

", "