body {
            margin:0;
            padding:0;

        }
        .container{
            background:#C4EFE5 url('http://www.nostalgiedom.fr/images/fond_top450.jpg') ;
            background-repeat:no-repeat;
            background-position:center bottom;
            height: 100vh;
            width:100%;
            margin: 0;
            padding: 0;
            display: flex;
            flex-flow: row wrap;
            justify-content: center;
        }
        .logo{
            text-align:center;
            margin:10px 0 10px 0;
        }

        .pub-300x250{
            width:300px;
            margin-left:auto;
            margin-right:auto;
        }
        .player-nosta{
            width:100%;
            margin-left:auto;
            margin-right:auto;
        }
.row-top{
    width:100%;
}       
.row{
   margin-left: auto;
   margin-right:auto;
}