<div class="no-support">
  <p>Heads up: It doesn't look like your browser supports scroll snapping! Check <a href="https://caniuse.com/#feat=css-snappoints">Can I use</a> for current browser support. Maybe try opening this CodePen in a different browser, like Chrome?</p>
</div>
<div class="example-wrapper">
  <p>Scroll slowly to "feel" the snap points.</p>
  
  <p><code>scroll-snap-align: start;</code></p>
  <div class="container both-scroll both-mandatory align-start">
    <div class="wrapper">
      <div class="element">
        <code>scroll-snap-align: start;</code>
      </div>
      <div class="element">
        <code>scroll-snap-align: start;</code>
      </div>
      <div class="element">
        <code>scroll-snap-align: start;</code>
      </div>
      <div class="element">
        <code>scroll-snap-align: start;</code>
      </div>
    </div>
  </div>
  
  <p><code>scroll-snap-align: end;</code></p>
  <div class="container both-scroll both-mandatory align-end">
    <div class="wrapper">
      <div class="element">
        <code>scroll-snap-align: end;</code>
      </div>
      <div class="element">
        <code>scroll-snap-align: end;</code>
      </div>
      <div class="element">
        <code>scroll-snap-align: end;</code>
      </div>
      <div class="element">
        <code>scroll-snap-align: end;</code>
      </div>
    </div>
  </div>
  
  <p><code>scroll-snap-align: center;</code></p>
  <div class="container both-scroll both-mandatory align-center">
    <div class="wrapper">
      <div class="element">
        <code>scroll-snap-align: center;</code>
      </div>
      <div class="element">
        <code>scroll-snap-align: center;</code>
      </div>
      <div class="element">
        <code>scroll-snap-align: center;</code>
      </div>
      <div class="element">
        <code>scroll-snap-align: center;</code>
      </div>
    </div>
  </div>
  
  <p><code>scroll-snap-align: none;</code></p>
  <div class="container both-scroll both-mandatory align-none">
    <div class="wrapper">
      <div class="element">
        <code>scroll-snap-align: none;</code>
      </div>
      <div class="element">
        <code>scroll-snap-align: none;</code>
      </div>
      <div class="element">
        <code>scroll-snap-align: none;</code>
      </div>
      <div class="element">
        <code>scroll-snap-align: none;</code>
      </div>
    </div>
  </div>
</div>

.align-start .element {
  scroll-snap-align: start;
}
.align-end .element {
  scroll-snap-align: end;
}
.align-center .element {
  scroll-snap-align: center;
}
.align-none .element {
  scroll-snap-align: none;
}


.no-support {
  text-align: center;
  padding: 5px;
  width: 450px;
  margin-left: auto;
  margin-right: auto;
  background: #ee6620;
  color: #fff;
  font-size: 16px;
}

@supports(scroll-snap-type: both mandatory) {
  .no-support {
    display: none;
  }
}

.example-wrapper {
  text-align: center;
  width: 360px;
  margin-left: auto;
  margin-right: auto;
}

.container {
  width: 360px;
  height: 360px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 10px;
  border: 2px solid #333;
  overflow: auto;
  position: relative;
  
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: mandatory;
  scroll-snap-points-y: repeat(300px);
  scroll-snap-points-x: repeat(300px);
}

.element {
  width: 300px;
  height: 300px;
  scroll-snap-stop: normal;
  color: white;
  font-size: 50px;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}
.element code {
  font-size: 13px;
}
.element:nth-child(1) {
  background: #1d1e21;
}
.element:nth-child(2) {
  background: #ee6620;
}
.element:nth-child(3) {
  background: #777ba0;
}
.element:nth-child(4) {
  background: #da1e62;
}

.both-mandatory {
  scroll-snap-type: both mandatory;
}

.both-scroll .wrapper {
  width: 620px;
  height: 100%;
  display: grid;
  grid-template-columns: 300px 300px;
  grid-gap: 10px;
  padding: 100px 100px 400px 100px; /* To give more space to scroll */
}