div {}
.wraper {
	max-width: 600px;
    margin: auto;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;}
.body_in-frame, .wrapper {
    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;
    min-height: calc(var(--vh,1vh)*100);
}