JSFiddle - React, Tailwind, and code Playground

by Zero Fx

HTML

<script src="bootstra"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<div class="container">
  <br>
  <br>

  <div class="row">
    <div class="col-md-12 text-center"><span>Тут все ясно "offset" - отжимает блок как бы по центру - но это <strong>margin</strong></span></div>

    <br>
    <br>

    <div class="col-md-4 col-sm-4 col-sm-offset-4">
      <div class="col-md-12 text-center"><strong>add class - offset</strong></div>
      <span>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.+</span>
    </div>
  </div>

  <br>
  <br>

  <div class="row">
    <div class="col-md-12 text-center"><span>Тут не все ясно - использую <strong>"center-block"</strong> - но блок так и стоит прижатий слева, я понимаю почему там <strong>float:left</strong>, тебе где логика? Или этот класс использовать без <strong>col-*-*</strong>, или добавить <strong>"text-center"</strong> - <strong>float:none</strong></span></div>

    <br>
    <br>

    <div class="center-block col-md-4 col-sm-4">
      <div class="col-md-12 text-center"><strong>add class - center-block</strong></div>
      <span>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laboru++</span>
 ...

CSS

.col-md-1 span {
  background-color: #ccc;
  display: block;
}

.col-md-4 span {
  background-color: #ececec;
  display: block;
}

.col-md-12 span {
  background-color: rgba(255, 200, 0, 0.5);
}

.center_block {
  margin: 0 auto !important;
  float: none !important;
}