/* Flexbox */
.d-flex {
    display: flex;
}
.flex-row {
    flex-direction: row;
}
.flex-row-reverse {
    flex-direction: row-reverse;
}
.flex-column {
    flex-direction: column;
}
.flex-column-reverse {
    flex-direction: column-reverse;
}
.justify-content-start {
    justify-content: flex-start;
}
.justify-content-end {
    justify-content: flex-end;
}
.justify-content-center {
    justify-content: center;
}
.justify-content-between {
    justify-content: space-between;
}
.justify-content-around {
    justify-content: space-around;
}
.justify-content-evenly {
    justify-content: space-evenly;
}
.align-items-start {
    align-items: flex-start;
}
.align-items-end {
    align-items: flex-end;
}
.align-items-center {
    align-items: center;
}
.align-items-baseline {
    align-items: baseline;
}
.align-items-stretch {
    align-items: stretch;
}
.align-self-start {
    align-self: flex-start;
}
.align-self-end {
    align-self: flex-end;
}
.align-self-center {
    align-self: center;
}
.align-self-baseline {
    align-self: baseline;
}
.align-self-stretch {
    align-self: stretch;
}

/* Button Group */
.button-group {
    display: block;
}
.button-group > * {
    margin-right: 20px;
}
.button-group > :last-child {
    margin-right: 0;
}