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<div class="parent">
  <div class="one"></div>
  <div class="two"></div>
</div>

.one{
  width:50px;
  height:50px;
  margin:25px;
  background-color:red;
}
.two{
  width:50px;
  height:50px;
  margin:25px;
  background-color:blue;
}
.parent{
  overflow:hidden;
  margin:35px;
  width:100px;
  background-color:aqua;
}

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