html {
    height: 100%;
}

body {
    background: url(/assets/img/bg1.jpg) no-repeat center center fixed; 
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    -ms-background-size: cover;
    background-size: cover;

    position: relative;
}

html, body {
    min-height: 85%;
}

.panel-container,
.warning-container {
    background-color:#ffffff;
    background-color:rgba(255, 255, 255, 0.5);
    border: 1px solid #fff;
    -ms-border-radius: 10px;
    border-radius: 10px;
    padding: 20px;
}

.panel-container {
    margin: 100px auto 0;
}

.warning-container p {
    margin: 0;
    font-size: 14px;
    text-align: center;
}

.jumbotron { margin-bottom: 0; }