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a {  -webkit-flex-basis: 8.33333%;      -ms-flex-preferred-size: 8.33333%;          flex-basis: 8.33333%;  -webkit-flex-basis: -webkit-calc(100% / 12 * 1);      -ms-flex-preferred-size: calc(100% / 12 * 1);          flex-basis: calc(100% / 12 * 1)}