HTMLとCSSとJSでのタイムラインの実装

Question

前提・実現したいこと

Building a Vertical Timeline With CSS and a Touch of JavaScriptを使って自分のHPにタイムラインの実装をしたい!

発生している問題・エラーメッセージ

文字の横に画像を配置したいけれどどうやったら実装できるかがわからない。

該当のソースコード

<section class="intro">
  <div class="container">
    <h1>Vertical Timeline &darr;</h1>
  </div>
</section>
<style type="text/css">

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font: normal 16px/1.5 "Helvetica Neue", sans-serif;
  background: #456990;
  color: #fff;
  overflow-x: hidden;
  padding-bottom: 50px;
}  /* INTRO SECTION
–––––––––––––––––––––––––––––––––––––––––––––––––– */

.intro {
  background: #F45B69;
  padding: 100px 0;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

h1 {
  font-size: 2.5rem;
}


/* TIMELINE
–––––––––––––––––––––––––––––––––––––––––––––––––– */

.timeline ul {
  background: #456990;
  padding: 50px 0;
}

.timeline ul li {
  list-style-type: none;
  position: relative;
  width: 6px;
  margin: 0 auto;
  padding-top: 50px;
  background: #fff;
}

.timeline ul li::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: inherit;
}

.timeline ul li div {
  position: relative;
  bottom: 0;
  width: 400px;
  padding: 15px;
  background: #F45B69;
}

.timeline ul li div::before {
  content: '';
  position: absolute;
  bottom: 7px;
  width: 0;
  height: 0;
  border-style: solid;
}

.timeline ul li:nth-child(odd) div {
  left: 45px;
}

.timeline ul li:nth-child(odd) div::before {
  left: -15px;
  border-width: 8px 16px 8px 0;
  border-color: transparent #F45B69 transparent transparent;
}

.timeline ul li:nth-child(even) div {
  left: -439px;
}

.timeline ul li:nth-child(even) div::before {
  right: -15px;
  border-width: 8px 0 8px 16px;
  border-color: transparent transparent transparent #F45B69;
}

time {
  display: block;
  font-size: 1.2rem;
  font-weight: bold;
  margin-bottom: 8px;
}


/* EFFECTS
–––––––––––––––––––––––––––––––––––––––––––––––––– */

.timeline ul li::after {
  transition: background .5s ease-in-out;
}

.timeline ul li.in-view::after {
  background: #F45B69;
}

.timeline ul li div {
  visibility: hidden;
  opacity: 0;
  transition: all .5s ease-in-out;
}

.timeline ul li:nth-child(odd) div {
  transform: translate3d(200px, 0, 0);
}

.timeline ul li:nth-child(even) div {
  transform: translate3d(-200px, 0, 0);
}

.timeline ul li.in-view div {
  transform: none;
  visibility: visible;
  opacity: 1;
}


/* GENERAL MEDIA QUERIES
–––––––––––––––––––––––––––––––––––––––––––––––––– */

@media screen and (max-width: 900px) {
  .timeline ul li div {
    width: 250px;
  }
  .timeline ul li:nth-child(even) div {
    left: -289px;
    /*250+45-6*/
  }
}

@media screen and (max-width: 600px) {
  .timeline ul li {
    margin-left: 20px;
  }
  .timeline ul li div {
    width: calc(100vw - 91px);
  }
  .timeline ul li:nth-child(even) div {
    left: 45px;
  }
  .timeline ul li:nth-child(even) div::before {
    left: -15px;
    border-width: 8px 16px 8px 0;
    border-color: transparent #F45B69 transparent transparent;
  }
}
</style>
<section class="timeline">
  <ul>
    <li>
      <div>
        <time>1934</time> At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium
      </div>
    </li>
    <li>
      <div>
        <time>1937</time> Proin quam velit, efficitur vel neque vitae, rhoncus commodo mi. Suspendisse finibus mauris et bibendum molestie. Aenean ex augue, varius et pulvinar in, pretium non nisi.
      </div>
    </li>
    <li>
      <div>
        <time>1940</time> Proin iaculis, nibh eget efficitur varius, libero tellus porta dolor, at pulvinar tortor ex eget ligula. Integer eu dapibus arcu, sit amet sollicitudin eros.
      </div>
    </li>
    <li>
      <div>
        <time>1943</time> In mattis elit vitae odio posuere, nec maximus massa varius. Suspendisse varius volutpat mattis. Vestibulum id magna est.
      </div>
    </li>
    <li>
      <div>
        <time>1946</time> In mattis elit vitae odio posuere, nec maximus massa varius. Suspendisse varius volutpat mattis. Vestibulum id magna est.
      </div>
    </li>
    <li>
      <div>
        <time>1956</time> In mattis elit vitae odio posuere, nec maximus massa varius. Suspendisse varius volutpat mattis. Vestibulum id magna est.
      </div>
    </li>
    <li>
      <div>
        <time>1957</time> In mattis elit vitae odio posuere, nec maximus massa varius. Suspendisse varius volutpat mattis. Vestibulum id magna est.
      </div>
    </li>
    <li>
      <div>
        <time>1967</time> Aenean condimentum odio a bibendum rhoncus. Ut mauris felis, volutpat eget porta faucibus, euismod quis ante.
      </div>
    </li>
    <li>
      <div>
        <time>1977</time> Vestibulum porttitor lorem sed pharetra dignissim. Nulla maximus, dui a tristique iaculis, quam dolor convallis enim, non dignissim ligula ipsum a turpis.
      </div>
    </li>
    <li>
      <div>
        <time>1985</time> In mattis elit vitae odio posuere, nec maximus massa varius. Suspendisse varius volutpat mattis. Vestibulum id magna est.
      </div>
    </li>
    <li>
      <div>
        <time>2000</time> In mattis elit vitae odio posuere, nec maximus massa varius. Suspendisse varius volutpat mattis. Vestibulum id magna est.
      </div>
    </li>
    <li>
      <div>
        <time>2005</time> In mattis elit vitae odio posuere, nec maximus massa varius. Suspendisse varius volutpat mattis. Vestibulum id magna est.
      </div>
    </li>
  </ul>
</section>
<script>
(function() {

  'use strict';

  // define variables
  var items = document.querySelectorAll(".timeline li");

  // check if an element is in viewport
  // http://stackoverflow.com/questions/123999/how-to-tell-if-a-dom-element-is-visible-in-the-current-viewport
  function isElementInViewport(el) {
    var rect = el.getBoundingClientRect();
    return (
      rect.top >= 0 &&
      rect.left >= 0 &&
      rect.bottom <= (window.innerHeight || document.documentElement.clientHeight) &&
      rect.right <= (window.innerWidth || document.documentElement.clientWidth)
    );
  }

  function callbackFunc() {
    for (var i = 0; i < items.length; i++) {
      if (isElementInViewport(items[i])) {
        items[i].classList.add("in-view");
      }
    }
  }

  // listen for events
  window.addEventListener("load", callbackFunc);
  window.addEventListener("resize", callbackFunc);
  window.addEventListener("scroll", callbackFunc);

})();
</script>

試したこと

色々とDIVの位置などをいじってみたが横に画像がこない

補足情報（FW/ツールのバージョンなど）

HTML５・CSS３・ javaScript

Answer 1

<li>
<img style="position: absolute;right: 20px;" src="test.png">
<div>
<time>1934</time>
...
<li>
<img style="position: absolute;left: 20px;" src="test.png">
<div>
<time>1937</time>
...

divノードはどちらかに寄る様にレイアウトされるので中に入れるよりもli要素にぶら下げた方が取り回ししやすいと思います。

Comments

[RetsuTagawa]

回答ありがとうございます。
試してみたところ、かなり近しいできになりました。
より近しい案があれば、またよろしくお願いします。