.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;}