?background:?linear-gradient(white,?white)?padding-box,?repeating-linear-gradient(-45deg,red?0,?red?12.5%,??????????????????????????????????????transparent?0,?transparent?25%,??????????????????????????????????????#58a?0,?#58a?37.5%,??????????????????????????????????????transparent?0,?transparent?50%)??????????????????????????????????????0?/?5em?5em;??最后的0代表什么意思？謝謝?
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