/* // flexbox */
.flex {
    display: flex;
}
.flex1 {
    flex: 1;
}
.grow1 {
    display: flex;
    flex-grow: 1;
}
.flex-column {
    display: flex;
    flex-direction: column;
}
.flex-wrap {
    display: flex;
    flex-wrap: wrap;
}
.flex-items-center {
    display: flex;
    align-items: center;
}
.flex-justify-center {
    display: flex;
    justify-content: center;
}
.flex-justify-end {
    display: flex;
    justify-content: flex-end;
}
.flex-align-center {
    display: flex;
    align-items: center;
    align-content: center;
}
.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}
.flex-wrap {
    display: flex;
    flex-wrap: wrap;
}
.flex-column-center {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.flex-row-center {
    display: flex;
    flex-direction: row;
    align-items: center;
}
.flex-row-end {
    display: flex;
    flex-direction: row;
    align-items: flex-end;
}
.flex-space-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.flex-space-around {
    display: flex;
    align-items: center;
    justify-content: space-around;
}
.space-between {
    display: flex;
    justify-content: space-between;
}