body {
    font-family: sans-serif;
    background: #fff;
    margin: 0px;
    padding: 0px;
    width: 100%;
    height: 100%;
}

html {
    height: 100%;
}

.logo {
    text-align: center;
    padding: 15% 0 0;
    margin: auto;
}

.logo img {
    display: block;
    margin: 0 auto;
    max-width: 100%;
    height: auto;
}

.logo img:first-child {
    margin-bottom: 20px;
}

@media only screen and (max-width: 768px) {
    .logo {
        padding: 45% 30px 0 30px;
    }
}