Row does not respect Div Padding

Row does not respect the padding of the div it's in.

div[role="conteudo"]{
            width: 100%;
            padding:0px;
            height: 100%;
            background-color: #FFF;
        }

<div class="container" role="conteudo">
      {...}
    <div class="row">
       <div class=col-lg-8>
          {...}
       <div class=col-lg-4>

Can Someone Help Me?