* {
    margin: 0;
    padding: 0;
}
html, body {
    height: 100%;
}
body {
    font-family: Arial, Tahoma, sans-serif;
}

div.wrap {
    display: table;
    position: absolute;
    height: 100%;
    width: 100%;
}
div.content {
    display: table-cell;
    vertical-align: middle;
}
div.daisy {
    width: 600px;
    margin-left: auto;
    margin-right: auto; 
}
img.daisy {
    width: 600px;
    height: 600px;
}