/* flex布局 */
.flex {
    display: flex;
}

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.flex-center-s {
    display: flex;
    align-items: center;
}

.flex-center-h {
    display: flex;
    justify-content: center;
}

.flex-space-between-h {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.flex-space-between-s {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
}

.flex-s {
    display: flex;
    flex-direction: column;
}

.flex-right {
    display: flex;
    justify-content: flex-end;
}

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