批改状态:合格
老师批语:
display:grid;//repeat(重复的次数,重复的值);grid-template-columns:10em 10em 10em;//= grid-template-columns:repeat(3,10em);grid-template-rows:10rm 10em 10em;//= grid-template-rows:repeat(3,10em);

background-color:yellowgreen;grid-area:2/2/4/4;// = grid-area:2/2/span 2/span 2

grid-auto-flow:column;//项目按列的顺序排列
grid-auto-flow:row;//项目按行的顺序排列(项目排列原本的默认值)
grid-auto-rows:10em
gap:10px 10px
place-content:center end;//对齐的前提是必须要有剩余空间

place-items:center center;// = place-items:center;

.ceshi:nth-of-type(5){background-color:violet;place-self: center center;// = place-self:center}

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