/* flex */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
}

.flex {
    display: flex;
    display: -webkit-flex;
}

.row {
    flex-direction: row;
    flex-direction: -webkit-row;
}

.row-rev {
    flex-direction: row-reverse;
    flex-direction: -webkit-row-reverse;
}

.col {
    flex-direction: column;
    flex-direction: -webkit-column;
}

.col-rev {
    flex-direction: column-reverse;
    flex-direction: -webkit-column-reverse;
}

.flex-grow {
    flex-grow: 1;
}

/* 换行 */

.wrap {
    /* nowrap | wrap | wrap-reverse; */
    flex-wrap: wrap;
}

/* 水平居中 */

.row-center {
    justify-content: center;
}

/* //水平居末 */

.row-end {
    justify-content: flex-end;
}

/* //垂直居末 */

.col-end {
    align-items: flex-end;
}

/* //两端对齐 */

.row-pj {
    justify-content: space-between;
}

.col-pj {
    justify-content: space-between;
}

.textarea {
    width: 100%;
    border: none;
    outline: none;
    resize: none;
}

/* 垂直居中 */

.col-center {
    align-items: center;
}

.flex-f1 {
    flex-grow: 1;
}