滚动div容器未显示所有列表项

Question

我有一个包含时间轴的水平可滚动div。但是，当您一直滚动到最左边时，它不会显示第一个〜8个列表项。我不知道为什么。下面是我的JSbin。

JSBIN：https://codepen.io/nerdy-droid/pen/eYmVBeJ

这里是我正在使用的CSS：

.timeline {
  list-style-type: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.li {
  transition: all 200ms ease-in;
}

.timestamp {
  margin-bottom: 20px;
  padding: 0px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-weight: 100;
}

.status {
  padding: 0px 40px;
  display: flex;
  justify-content: center;
  border-top: 2px solid #D6DCE0;
  position: relative;
  transition: all 200ms ease-in;
}
.status h4 {
  font-weight: 600;
}
.status:before {
  content: "";
  width: 25px;
  height: 25px;
  background-color: white;
  border-radius: 25px;
  border: 1px solid #ddd;
  position: absolute;
  top: -15px;
  left: 42%;
  transition: all 200ms ease-in;
}

.li.complete .status {
  border-top: 2px solid #66DC71;
}
.li.complete .status:before {
  background-color: #66DC71;
  border: none;
  transition: all 200ms ease-in;
}
.li.complete .status h4 {
  color: #66DC71;
}

@media (min-device-width: 320px) and (max-device-width: 700px) {
  .timeline {
    list-style-type: none;
    display: block;
  }

  .li {
    transition: all 200ms ease-in;
    display: flex;
    width: inherit;
  }

  .timestamp {
    width: 100px;
  }

  .status:before {
    left: -8%;
    top: 30%;
    transition: all 200ms ease-in;
  }
}
html, body {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  font-family: "Titillium Web", sans serif;
  color: #758D96;
}

button {
  position: absolute;
  width: 100px;
  min-width: 100px;
  padding: 20px;
  margin: 20px;
  font-family: "Titillium Web", sans serif;
  border: none;
  color: white;
  font-size: 16px;
  text-align: center;
}

#toggleButton {
  position: absolute;
  left: 50px;
  top: 20px;
  background-color: #75C7F6;
}

.outer {
    width: 500px;
    height: 300px;
    white-space: nowrap;
    position: relative;
    overflow-x: scroll;
    overflow-y: hidden;
   -webkit-overflow-scrolling: touch;
}

这里是HTML：

<link href='https://fonts.googleapis.com/css?family=Titillium+Web:400,200,300,600,700' rel='stylesheet' type='text/css'>
<link href="//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet">

<div class="outer">
<ul class="timeline" id="timeline">
  <li class="li complete">
    <div class="timestamp">
      <span class="author">First One</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> First One</h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Email Sent </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">Aaron Rodgers</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> SIC Approval </h4>
    </div>
  </li>
  <li class="li">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">TBD<span>
    </div>
    <div class="status">
      <h4> Shift Completed </h4>
    </div>
  </li>
      <li class="li complete">
    <div class="timestamp">
      <span class="author">Abhi Sharma</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Shift Created </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Email Sent </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">Aaron Rodgers</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> SIC Approval </h4>
    </div>
  </li>
  <li class="li">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">TBD<span>
    </div>
    <div class="status">
      <h4> Shift Completed </h4>
    </div>
  </li>
      <li class="li complete">
    <div class="timestamp">
      <span class="author">Abhi Sharma</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Shift Created </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Email Sent </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">Aaron Rodgers</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> SIC Approval </h4>
    </div>
  </li>
  <li class="li">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">TBD<span>
    </div>
    <div class="status">
      <h4> Shift Completed </h4>
    </div>
  </li>
      <li class="li complete">
    <div class="timestamp">
      <span class="author">Abhi Sharma</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Shift Created </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Email Sent </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">Aaron Rodgers</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> SIC Approval </h4>
    </div>
  </li>
  <li class="li">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">TBD<span>
    </div>
    <div class="status">
      <h4> Shift Completed </h4>
    </div>
  </li>
      <li class="li complete">
    <div class="timestamp">
      <span class="author">Abhi Sharma</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Shift Created </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Email Sent </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">Aaron Rodgers</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> SIC Approval </h4>
    </div>
  </li>
  <li class="li">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">TBD<span>
    </div>
    <div class="status">
      <h4> Shift Completed </h4>
    </div>
  </li>
      <li class="li complete">
    <div class="timestamp">
      <span class="author">Abhi Sharma</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Shift Created </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Email Sent </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">Aaron Rodgers</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> SIC Approval </h4>
    </div>
  </li>
  <li class="li">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">TBD<span>
    </div>
    <div class="status">
      <h4> Shift Completed </h4>
    </div>
  </li>
      <li class="li complete">
    <div class="timestamp">
      <span class="author">Abhi Sharma</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Shift Created </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Email Sent </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">Aaron Rodgers</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> SIC Approval </h4>
    </div>
  </li>
  <li class="li">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">TBD<span>
    </div>
    <div class="status">
      <h4> Shift Completed </h4>
    </div>
  </li>
      <li class="li complete">
    <div class="timestamp">
      <span class="author">Abhi Sharma</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Shift Created </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Email Sent </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">Aaron Rodgers</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> SIC Approval </h4>
    </div>
  </li>
  <li class="li">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">TBD<span>
    </div>
    <div class="status">
      <h4> Last One</h4>
    </div>
  </li>
 </ul>
   </div>

提前感谢！

Answer 1

.timeline {
  list-style-type: none;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.li {
  transition: all 200ms ease-in;
}

.timestamp {
  margin-bottom: 20px;
  padding: 0px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-weight: 100;
}

.status {
  padding: 0px 40px;
  display: flex;
  justify-content: center;
  border-top: 2px solid #D6DCE0;
  position: relative;
  transition: all 200ms ease-in;
}
.status h4 {
  font-weight: 600;
}
.status:before {
  content: "";
  width: 25px;
  height: 25px;
  background-color: white;
  border-radius: 25px;
  border: 1px solid #ddd;
  position: absolute;
  top: -15px;
  left: 42%;
  transition: all 200ms ease-in;
}

.li.complete .status {
  border-top: 2px solid #66DC71;
}
.li.complete .status:before {
  background-color: #66DC71;
  border: none;
  transition: all 200ms ease-in;
}
.li.complete .status h4 {
  color: #66DC71;
}

@media (min-device-width: 320px) and (max-device-width: 700px) {
  .timeline {
    list-style-type: none;
    display: block;
  }

  .li {
    transition: all 200ms ease-in;
    display: flex;
    width: inherit;
  }

  .timestamp {
    width: 100px;
  }

  .status:before {
    left: -8%;
    top: 30%;
    transition: all 200ms ease-in;
  }
}
html, body {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  font-family: "Titillium Web", sans serif;
  color: #758D96;
}

.outer {
    width: 500px;
    height: 300px;
    white-space: nowrap;
    position: relative;
    overflow-x: scroll;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
}

<link href='https://fonts.googleapis.com/css?family=Titillium+Web:400,200,300,600,700' rel='stylesheet' type='text/css'>
<link href="//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet">

<div class="outer">
<ul class="timeline" id="timeline">
  <li class="li complete">
    <div class="timestamp">
      <span class="author">First One</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> First One</h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Email Sent </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">Aaron Rodgers</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> SIC Approval </h4>
    </div>
  </li>
  <li class="li">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">TBD<span>
    </div>
    <div class="status">
      <h4> Shift Completed </h4>
    </div>
  </li>
      <li class="li complete">
    <div class="timestamp">
      <span class="author">Abhi Sharma</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Shift Created </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Email Sent </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">Aaron Rodgers</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> SIC Approval </h4>
    </div>
  </li>
  <li class="li">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">TBD<span>
    </div>
    <div class="status">
      <h4> First Shown - but not first entry </h4>
    </div>
  </li>
      <li class="li complete">
    <div class="timestamp">
      <span class="author">Abhi Sharma</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Shift Created </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Email Sent </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">Aaron Rodgers</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> SIC Approval </h4>
    </div>
  </li>
  <li class="li">
    <div class="timestamp">
      <span class="author">PAM Admin PAM Admin</span>
      <span class="date">TBD<span>
    </div>
    <div class="status">
      <h4> Shift Completed </h4>
    </div>
  </li>
      <li class="li complete">
    <div class="timestamp">
      <span class="author">Abhi Sharma</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Shift Created </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Email Sent </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">Aaron Rodgers</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> SIC Approval </h4>
    </div>
  </li>
  <li class="li">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">TBD<span>
    </div>
    <div class="status">
      <h4> Shift Completed </h4>
    </div>
  </li>
      <li class="li complete">
    <div class="timestamp">
      <span class="author">Abhi Sharma</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Shift Created </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Email Sent </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">Aaron Rodgers</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> SIC Approval </h4>
    </div>
  </li>
  <li class="li">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">TBD<span>
    </div>
    <div class="status">
      <h4> Shift Completed </h4>
    </div>
  </li>
      <li class="li complete">
    <div class="timestamp">
      <span class="author">Abhi Sharma</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Shift Created </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Email Sent </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">Aaron Rodgers</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> SIC Approval </h4>
    </div>
  </li>
  <li class="li">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">TBD<span>
    </div>
    <div class="status">
      <h4> Shift Completed </h4>
    </div>
  </li>
      <li class="li complete">
    <div class="timestamp">
      <span class="author">Abhi Sharma</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Shift Created </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Email Sent </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">Aaron Rodgers</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> SIC Approval </h4>
    </div>
  </li>
  <li class="li">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">TBD<span>
    </div>
    <div class="status">
      <h4> Shift Completed </h4>
    </div>
  </li>
      <li class="li complete">
    <div class="timestamp">
      <span class="author">Abhi Sharma</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Shift Created </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">PAM Admin</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> Email Sent </h4>
    </div>
  </li>
  <li class="li complete">
    <div class="timestamp">
      <span class="author">Aaron Rodgers</span>
      <span class="date">11/15/2014<span>
    </div>
    <div class="status">
      <h4> SIC Approval </h4>
    </div>
  </li>
  <li class="li">
    <div class="timestamp">
      <span class="author">PAM Admin PAM Admin</span>
      <span class="date">TBD<span>
    </div>
    <div class="status">
      <h4> Last One</h4>
    </div>
  </li>
 </ul>
   </div>

将课程时间轴的证明内容的值从中心更改为flex-start。

.timeline { list-style-type: none; display: flex; align-items: center; justify-content: flex-start;}