use background to bring in the background image. Writing background-repeat: no-repeat; alone for the first time did not take effect. Change it to write after the address and take effect. Why?
the first time it is written as follows, no-repeat does not take effect:
< H1 > banner {< / H1 >background-image: url(../images/book1.jpg);
backgroud-repeat: no-repeat;
backgroud-size: cover;
width: 100%;}
effect
:
}
backgroud-repeat: no-repeat; backgroud misspelled, one less n
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