<h1>flex-flow: row nowrap;</h1>
<section class="container row-nowrap">
  <div class="item">TesteDoItem1</div>
  <div class="item">TesteDoItem2</div>
  <div class="item">TesteDoItem3</div>
</section>

<h1>flex-flow: row wrap;</h1>
<section class="container row-wrap">
  <div class="item">TesteDoItem1</div>
  <div class="item">TesteDoItem2</div>
  <div class="item">TesteDoItem3</div>
</section>

<h1>flex-flow: column-nowrap;</h1>
<section class="container column-nowrap">
  <div class="item">TesteDoItem1</div>
  <div class="item">TesteDoItem2</div>
  <div class="item">TesteDoItem3</div>
</section>
.row-nowrap {
  flex-flow: row nowrap;
}
.column-nowrap {
  flex-flow: column nowrap;
}
.row-wrap {
  flex-flow: row wrap;
}

/* Flex Container */
.container {
  max-width: 360px;
  margin: 0 auto;
  display: flex;
  border: 1px solid #ccc;
}
/* Flex Item */
.item {
  /* O flex: 1; é necessário para que cada item se expanda ocupando o tamanho máximo do container. */
  flex: 1;
  margin: 5px;
  background: tomato;
  text-align: center;
  font-size: 1.5em;
}

h1 {
  text-align: center;
  margin: 20px 0 0 0;
  font-size: 1.25em;
  font-weight: normal;
}

body {
  font-family: monospace;
  color: #333;
}

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