HTML Learning Summary

1 single closed label:<br> <link/>

Whether the 2/img is an inline or block element,

Inline cannot be set width and height, but IMG can

Block will be a separate line, but IMG is not.

In addition IMG can be set width and height, can set margin value. and IMG itself with a certain margin value, so it and the lower div will have a certain spacing, but this margin value, can not be used margin:0; But you can do this: display:block;margin:0; we can also use Margin:auto to center it horizontally but not to center vertically (perhaps with the positioning position to solve)

In fact, IMG is an inline element, but very special, is to replace inline elements, can be set width and height, can be set Magin, (CSS initialization code has)

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