.flex{display:-webkit-box;display:-ms-flexbox;display:flex;}
.flex_row{-webkit-box-orient:horizontal;-webkit-box-direction:normal;-ms-flex-direction:row;flex-direction:row;}
.flex_col{-webkit-box-orient:vertical;-webkit-box-direction:normal;-ms-flex-direction:column;flex-direction:column;}
.flex_wrap{-ms-flex-wrap:wrap; flex-wrap:wrap;}
.flex_nowrap{-ms-flex-wrap:nowrap;flex-wrap:nowrap;}
.flex_center{-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center;}
.flex_center_center{-webkit-box-align:center;-ms-flex-align:center;align-items:center;}
.flex_between{-webkit-box-pack:justify;-ms-flex-pack:justify;justify-content:space-between;}
.flex_around{justify-content: space-around;}
.flex_end{-webkit-box-pack:end; -ms-flex-pack:end; justify-content:flex-end;}
.flex_start{-webkit-box-pack:start;-ms-flex-pack:start;justify-content:flex-start;}
.flex_stretch{-ms-flex-item-align:stretch; align-self:stretch;}