html {
    background-color: #ffffff;
    height:100%;
}

body {
    width:100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0;
}

a {
    width: 100%;
    max-width: 488px;
    max-height: 488px;
    height: auto;
    margin:0;
}

.logo {
    width: 100%;
    max-width: 488px;
    height: auto;
    margin: 0;
}

h1 {
    text-indent: 100%;
    white-space: nowrap;
    overflow: hidden;
    display: none;
    width: 488px;
    height: 488px;
}