CSS से रिस्पॉन्सिव टाइमलाइन कैसे बनाएं?

रिस्पॉन्सिव टाइमलाइन में केंद्रीय रेखा और बारी-बाएं-दाएं इवेंट कार्ड होते हैं। मोबाइल पर (<600px) रेखा बाएं खिसक जाती है और सभी कार्ड दाएं आ जाते हैं। ::before/::after से तीर और डॉट बनते हैं।

उदाहरण

<!DOCTYPE html>
<html>
<head>
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <style>
    * { box-sizing: border-box; }
    body { background-color: #9037f5; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
    h2 { text-align: center; }
    .timeline { position: relative; max-width: 1200px; margin: 0 auto; }
    .timeline::after {
      content: ""; position: absolute; width: 6px;
      background-color: rgb(253, 203, 255); top: 0; bottom: 0;
      left: 50%; margin-left: -3px;
    }
    .eventsContainer {
      padding: 10px 40px; position: relative;
      background-color: inherit; width: 50%;
    }
    .eventsContainer::after {
      content: ""; position: absolute; width: 25px; height: 25px;
      right: -17px; background-color: rgb(219, 255, 12);
      border: 4px dashed rgb(255, 0, 0); background-clip: content-box;
      top: 15px; z-index: 1;
    }
    .displayLeft { left: 0; }
    .displayRight { left: 50%; }
    .displayLeft::before {
      content: ""; height: 0; position: absolute; top: 22px;
      width: 0; z-index: 1; right: 30px;
      border: medium solid rgb(225, 246, 255);
      border-width: 10px 0 10px 10px;
      border-color: transparent transparent transparent white;
    }
    .displayRight::before {
      content: ""; height: 0; position: absolute; top: 22px;
      width: 0; z-index: 1; left: 30px;
      border: medium solid white;
      border-width: 10px 10px 10px 0;
      border-color: transparent white transparent transparent;
    }
    .displayRight::after { left: -16px; }
    .event {
      padding: 20px 30px; background-color: white;
      position: relative; border-radius: 6px;
    }
    @media screen and (max-width: 600px) {
      .timeline::after { left: 31px; }
      .eventsContainer { width: 100%; padding-left: 70px; padding-right: 25px; }
      .eventsContainer::before { left: 60px; border: medium solid white; border-width: 10px 10px 10px 0; border-color: transparent white transparent transparent; }
      .displayLeft::after, .displayRight::after { left: 15px; }
      .displayRight { left: 0%; }
    }
  </style>
</head>
<body>
  <div class="timeline">
    <div class="eventsContainer displayLeft">
      <div class="event"> <h2>2017</h2> <h3>Donald Trump became the 45th president of US</h3> </div>
    </div>
    <div class="eventsContainer displayRight">
      <div class="event"> <h2>2016</h2> <h3>Summer Olympics are held in rio de Janerio</h3> </div>
    </div>
    <div class="eventsContainer displayLeft">
      <div class="event"> <h2>2015</h2> <h3>7.8 Magnitude Earthquake strikes nepal</h3> </div>
    </div>
  </div>
</body>
</html>