html,body,.fdiv{
    position: absolute;
    margin: 0;
    top: 0px;
    left: 0px;
    width: 100%;
    height: 100%;
    overflow: hidden;
}
@media only screen and (max-width: 650px) {
  body {
    width: 650px;
  }
    #tcaname{
        font-size: 20px !important;
    }
}
body{
    background: url(bg.png) no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}