.b-contest-header {flex-wrap:wrap;}
.b-contest-header__image {flex-basis:100%;order:2;}
.b-contest-header__data {flex-basis:100%;order:1;}

.b-contest-leaderboard__list {gap:12px;}
.b-contest-leaderboard__item {flex-basis:	calc((100% - 12px) / 2)}

.b-contest-galleries__item {flex-basis: calc((100% - 20px) / 2);}
.b-contest-galleries__list.winners .b-contest-galleries__item {flex-basis:calc((100% - 12px) / 2);}

.b-contest-gallery__item {flex-basis: calc((100% - 20px) / 2);}