body {
    background: url("../images/BlueWater_2.jpg") no-repeat center center fixed; 
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}

textarea {
    resize: none;
}

div.relative { position: relative; }

/* 屏蔽版面 */
div.barrierPanel {
    position: absolute;
    top: -20px; bottom: 0; left: 0px;
    width: 100%;
    background-color: rgba(32, 32, 32, 0.7); 
    z-index: 65536;
}