Pic 3

.grid-ut.type-center-full
.grid-ut.type-center-90per
.grid-ut.type-center-80per
.grid-ut.type-center-70per
.grid-ut.type-center-60per
.grid-ut.type-center-half
.grid-ut.type-center-40per
.grid-ut.type-center-2third
.grid-ut.type-center-1third

横幅割合、中央配置

.grid-ut.type-center-1third (33.33%)

.grid-ut.type-center-40per (40%)

.grid-ut.type-center-half (50%)

.grid-ut.type-center-2third (66.66%)