左上
text-align: left;
中上
text-align: center;
右上
text-align: right;
左中
display: flex;
justify-content: flex-start;
align-items: center;
text-align: left;
中中
display: flex;
justify-content: center;
align-items: center;
text-align: center;
右中
display: flex;
justify-content: flex-end;
align-items: center;
text-align: right;
左下
display: flex;
justify-content: flex-start;
align-items: center;
text-align: left;
中下
display: flex;
justify-content: center;
align-items: center;
text-align: center;
右下
display: flex;
justify-content: flex-end;
align-items: center;
text-align: right;
文字两端对齐
text-align: justify;