灵活包装iOS Safari和Chrome

Question

Flex wrap无法在Safari和Chrome上运行-该文档似乎有据可查，但我所阅读的修复程序均无法解决我的情况。

在iOS Safari和Chrome上，这些行不会自动换行，而是会移出容器。我曾尝试通过Autoprefixer运行它，但仍然没有乐趣。

这是一个简化的测试用例：https://codepen.io/jciw/pen/yxPebP

* {
  box-sizing: border-box;
}

body {
  background-color: #ccc;
}

.container {
  width: 1000px;
  margin: 0 auto;
  background-color: white;
}

.row {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
  -ms-flex-direction: row;
  flex-direction: row;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  margin-left: -25px;
  margin-right: -25px;
}

.column-one-third {
  width: 33.333%;
  padding-left: 25px;
  padding-right: 25px;
}

<div class="container">
  <div class="row">
    <div class="column-one-third">
      <h1>Hello</h1>
    </div>
    <div class="column-one-third">
      <h1>Hello</h1>
    </div>
    <div class="column-one-third">
      <h1>Hello</h1>
    </div>
    <div class="column-one-third">
      <h1>Hello</h1>
    </div>
    <div class="column-one-third">
      <h1>Hello</h1>
    </div>
    <div class="column-one-third">
      <h1>Hello</h1>
    </div>
    <div class="column-one-third">
      <h1>Hello</h1>
    </div>
    <div class="column-one-third">
      <h1>Hello</h1>
    </div>
    <div class="column-one-third">
      <h1>Hello</h1>
    </div>
    <div class="column-one-third">
      <h1>Hello</h1>
    </div>
    <div class="column-one-third">
      <h1>Hello</h1>
    </div>
    <div class="column-one-third">
      <h1>Hello</h1>
    </div>
    <div class="column-one-third">
      <h1>Hello</h1>
    </div>
    <div class="column-one-third">
      <h1>Hello</h1>
    </div>
  </div>
</div>