我正在尝试在css中并排放置5个标题？

<div class="container">
  <h1>Title 1</h1>
  <h1>Title 2</h1>
  <h1>Title 3</h1>
  <h1>Title 4</h1>
  <h1>Title 5</h1>
</div>

.container {
  display: flex;
  justify-content: space-between;
}

.container h1 {
  flex: 1;
}

<div class="container">
  <h1>Title 1</h1>
  <h1>Title 2</h1>
  <h1>Title 3</h1>
  <h1>Title 4</h1>
  <h1>Title 5</h1>
</div>

.container {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
}