samples/hello-cordova/css/index.css

html,
body {
    height:100%;
    font-size:12px;
    width:100%;
}

html {
    display:table;
}

body {
    background-color:#A7A7A7;
    background-image:linear-gradient(top, #A7A7A7 0%, #E4E4E4 51%);
    background-image:-webkit-linear-gradient(top, #A7A7A7 0%, #E4E4E4 51%);
    background-image:-ms-linear-gradient(top, #A7A7A7 0%, #E4E4E4 51%);
    background-image:-webkit-gradient(
        linear,
        left top,
        left bottom,
        color-stop(0, #A7A7A7),
        color-stop(0.51, #E4E4E4)
    );
    display:table-cell;
    font-family:'HelveticaNeue-Light', 'HelveticaNeue', Helvetica, Arial, sans-serif;
    text-transform:uppercase;
    vertical-align:middle;
}

.app {
    background-image:url(../img/cordova.png);
    background-repeat:no-repeat;
    margin:0px auto;
    width:275px;
}

h1 {
    font-size:2em;
    font-weight:300;
    margin:0px;
    overflow:visible;
    padding:0px;
    text-align:center;
}

.status {
    background-color:#333333;
    border-radius:4px;
    -webkit-border-radius:4px;
    color:#FFFFFF;
    font-size:1em;
    margin:0px auto;
    padding:2px 10px;
    text-align:center;
    width:100%;
    max-width:175px;
}

.status.complete {
    background-color:#4B946A;
}

.hide {
    display:none;
}

@keyframes fade {
    from { opacity: 1.0; }
    50% { opacity: 0.4; }
    to { opacity: 1.0; }
}
 
@-webkit-keyframes fade {
    from { opacity: 1.0; }
    50% { opacity: 0.4; }
    to { opacity: 1.0; }
}
 
.blink {
    animation:fade 3000ms infinite;
    -webkit-animation:fade 3000ms infinite;
}

/* portrait */
/* @media screen and (max-aspect-ratio: 1/1) */
.app {
    background-position:center top;
    height:100px;              /* adds enough room for text */
    padding:180px 0px 0px 0px; /* background height - shadow offset */
}

/* lanscape (when wide enough) */
@media screen and (min-aspect-ratio: 1/1) and (min-width:445px) {
    .app {
        background-position:left center;
        height:140px;       /* height + padding = background image size */
        padding-left:170px; /* background width */
        padding-top:60px;   /* center the text */
    }
}