body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
}

.main {
    width: 100%;
    height: 100%;
}

.content {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    padding: 0;
    height: 300vh;
}

.page {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    position: relative;
    width: 100%;
    text-align: center;
    vertical-align: middle;
    font-size: 18px;
    padding-left: 25%;
    padding-right: 25%;
}