在一行中将多个按钮插入页面

<div class="button-container">
  <button class="btn">按钮1</button>
  <button class="btn">按钮2</button>
  <button class="btn">按钮3</button>
</div>

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

.btn {
  padding: 10px 20px;
  background-color: #f0f0f0;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}