Align Items


.align-items-start

Caja 1
Caja 2
Caja 3

.align-items-center

Caja 1
Caja 2
Caja 3

.align-items-end

Caja 1
Caja 2
Caja 3

.align-items-baseline

Caja 1
Caja 2
Caja 3

.align-items-stretch

Caja 1
Caja 2
Caja 3

Align Self


.align-self-start
.align-self-center
.align-self-end
.align-self-baseline
.align-self-stretch

Auto Margins


.mr-auto
Caja 2
Caja 3
Caja 1
Caja 2
.ml-auto
.mb-auto
Caja 2
Caja 3
Caja 1
Caja 2
.mt-auto