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<style>
html {
  box-sizing: border-box;
}

*,
*:before,
*:after {
  box-sizing: inherit;
}

/* The Masonry Container */
.masonry {
  margin: 1.5em auto;
  max-width: 768px;
  column-gap: 1.5em;
}

/* The Masonry Brick */
.item {
  background: #fff;
  padding: 1em;
  margin: 0 0 1.5em;
}

/* Masonry on large screens */
@media only screen and (min-width: 1024px) {
  .masonry {
    column-count: 4;
  }
}

/* Masonry on medium-sized screens */
@media only screen and (max-width: 1023px) and (min-width: 768px) {
  .masonry {
    column-count: 3;
  }
}

/* Masonry on small screens */
@media only screen and (max-width: 767px) and (min-width: 540px) {
  .masonry {
    column-count: 2;
  }
}
</style>

<div class="masonry">
   <div class="item">Lorem ipsum dolor sit amet, consectetur adipisicing elit.</div>
   <div class="item">...</div>
   ...
   ...
   <div class="item">...</div>
</div>