* {
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100vh;
    margin: 0;
    padding: 0;
    background-color: #f5f7fa;
    font-size: calc(.6 * (1.5vh + 1.1vw));
    line-height: 1.5vw;
}