html,body
{
    height: 100%;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
    color:#000;
    font-family: "Arial";
    font-size: 14px;
}
body
{
   display: table; 
   margin: 0 auto;
}

.container
{  
    height: 100%;
    display: table-cell;   
    vertical-align: middle;
}
.cent
{
    width: 450px;
}

.logo {
    margin-bottom: 40px;
}