Centering div

HTML

<div class="container layout-row layout-align-center-center">
<div>
Some content bro
</div>
</div>

CSS

.container {
  font: 400 11px/1.4 'Open Sans', Helvetica, Arial, sans-serif;
  background-color:red;
  height:200px;
  width:200px;
}

.layout-row{
  box-sizing: border-box;
  display: -webkit-box;
  display: -webkit-flex;
  display: flex;
  -webkit-box-direction: normal;
  -webkit-box-orient: horizontal;
  -webkit-flex-direction: row;
  flex-direction: row;
}

.layout-align-center-center{
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-grid-row-align: center;
  align-items: center;
  -webkit-align-content: center;
  align-content: center;
      -webkit-box-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
}