body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 100%;
    line-height: 1.4;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
main {
    flex: 1 1 auto;
    background-color: #ffffff;
    padding: 4rem 0 0 4rem;
    color: #404850;
}
img {
    box-sizing: border-box;
    width: auto;
    height: auto;
    max-width: 100%;
    vertical-align: top;
}