@H_403_0@本文实例为大家分享了bootstrap栅格系统的具体代码，供大家参考，具体内容如下
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<!DOCTYPE html>
<html lang="zh-CN"> <Meta charset="utf-8"> <Meta http-equiv="X-UA-Compatible" content="IE=edge"> <Meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=no">
<div class="container">
<div class="row">
<div class="col-lg-3 col-md-4 a">a
<div class="col-lg-3 col-md-4 a">a
<div class="col-lg-3 col-md-4 a">a
<div class="col-lg-3 col-md-4 a">a
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<div class="col-lg-3 col-md-4 a">a
<div class="col-lg-3 col-md-4 a">a
<div class="col-lg-3 col-md-4 a">a
<div class="col-lg-3 col-md-4 a">a
<div class="col-lg-3 col-md-4 a">a
<div class="col-lg-3 col-md-4 a">a
<div class="col-lg-3 col-md-4 a">a