body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f4f4f4;
    font-size: 16px;
    color: #333;
    height: 3000px;
    text-align: center;
}

h2 {
    margin: 70px 0 30px 0;
}

a {
    margin: 50px;
}

#bottom {
    font-size: 14px;
    line-height: 18px;
    color: #777777;
    margin-top: 80px;
}

#mo {
    font-size: 18px;
    vertical-align: middle;
}

.viewport {
    left: 200px;
    text-align: center;
    position: fixed;
}

.viewport a {
    font-size: small;
}

.viewport#iphone4 {
    margin-top: 15px;
}

#iphone4 #iphone-mask {
    width: 406px;
    height: 776px;
    background: url(iphone4-mask.png) no-repeat 0 0;
    text-align: left;
    display: inline-block;
}

#iphone6 #iphone-mask {
    width: 406px;
    height: 776px;
    background: url(iphone6-mask.png) no-repeat 0 0;
    background-position: 10px -51px;
    background-size: 396px auto;
    text-align: left;
    display: inline-block;
}

#clear a {
    color: #ffffff;
}

.viewport#iphone4 iframe {
    margin: 140px 0 0 27px;
}

.viewport#iphone6 iframe {
    margin: 39px 0 0 30px;
}

.viewport#ipad iframe {
    width: 850px;
    height: 600px;
    margin-top: 30px;
    border: 1px solid #ccc;
}