CSS关键帧没有完全离开屏幕，尽管100%翻译tx设置为-100%

Question

// Sample items to add to the news-ticker
let sampleNewsItems = [
"Lorem ipsum dolor sit amet, consectetur adipiscing elit.",
"Vivamus enim magna, elementum in consectetur sit amet, porta ut eros"
];
// Iterate through the sample news items and process accordingly
let nextTimeoutDur;
for (let x = 0; x < sampleNewsItems.length; x++) {
let screenWidth = $(window).innerWidth();
$('.ticker-wrap').width(screenWidth);
$(".ticker-wrap").append('<div class="ticker-item" data-index="' + x + '"><span class="tickerContent"></span></div>');
$('.ticker-item[data-index="' + x + '"] .tickerContent').html(sampleNewsItems[x]);
let newsItemLength = 500;
$('.ticker-item[data-index="' + (x - 1) + '"]').outerWidth(500);
let tickerDur = 7;
nextTimeoutDur = x > 0 ? (tickerDur * newsItemLength) / screenWidth : 0;
$(".ticker-item[data-index=" + x + "]").css("animation", "ticker " + tickerDur + "s  linear " + nextTimeoutDur + "s  infinite");
}

@keyframes ticker {
0% {
transform: translate3d(100vw, 0, 0);
visibility: visible;
}
100% {
transform: translate3d(-100%, 0, 0);
}
}
.ticker-wrap {
width: 100%;
}
.ticker-wrap .ticker-item {
display: inline-block;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="ticker-wrap"></div>

我希望第二个ticker项目在消失之前完全离开视口，这就是为什么我将transform: translate3d(-100%, 0, 0);设置为100%的关键帧。然而，一旦第一个ticker项目消失，第二个ticker项就会从视口中消失。为什么会这样？我该怎么修？

这是一个CodePen和我的代码。

https://codepen.io/prizzi13/pen/JwGmGE

Answer 1

.ticker-item的position应为absolute