div对齐中心然后离开而不使用宽度

I have div's inside a div

我在div里面有div

<div id="out" align="center">
      <div id="in1" align="left">111</div>
      <div id="in2" align="left">aaaaaaaaaaaaaaaaaaaaaa</div>
      <div id="in3" align="left">bbbb</div>
      <div id="in4" align="left">6516519191</div>
      <div id="in5" align="left">apple</div>
      <div id="in6" align="left">ii</div>
</div>
<div