flex.scss

@mixin flexbox {
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-direction: normal;
    -moz-box-direction: normal;
    -webkit-box-orient: horizontal;
    -moz-box-orient: horizontal;
    -webkit-flex-direction: row;
    -ms-flex-direction: row;
    flex-direction: row;
    -webkit-flex-wrap: nowrap;
    -ms-flex-wrap: nowrap;
    flex-wrap: nowrap;
    -webkit-box-pack: start;
    -moz-box-pack: start;
    -webkit-justify-content: flex-start;
    -ms-flex-pack: start;
    justify-content: flex-start;
    -webkit-align-content: flex-start;
    -ms-flex-line-pack: start;
    align-content: flex-start;
    -webkit-box-align: start;
    -moz-box-align: start;
    -webkit-align-items: flex-start;
    -ms-flex-align: start;
    align-items: flex-start;
}

@mixin flex($stretch: 1) {
    -webkit-box-ordinal-group: 1;
    -moz-box-ordinal-group: 1;
    -webkit-order: 0;
    -ms-flex-order: 0;
    order: 0;
    -webkit-box-flex: $stretch;
    -moz-box-flex: $stretch;
    -webkit-flex: $stretch 1 auto;
    -ms-flex: $stretch 1 auto;
    flex: $stretch 1 auto;
    -webkit-align-self: stretch;
    -ms-flex-item-align: stretch;
    align-self: stretch;
}