/* CSS Document */
html {
min-height: 100%;

overflow-y: scroll;
}
body {
display: -webkit-box;
display: -ms-flexbox;
display: flex;
-webkit-box-orient: vertical;
-webkit-box-direction: normal;
    -ms-flex-direction: column;
        flex-direction: column;
min-height: 100vh;
}
main {
-webkit-box-flex: 1;
    -ms-flex: 1 0 auto;
        flex: 1 0 auto  
}