[Original] I found a point on CSS that should be paid attention to when using float (Firefox + IE)

There are two DIV
<Div class = "Left"> </div>
<Div class = "right"> </div>
. Left
{
Float: left;
Width: 20%;
Border: solid 1px red;
}

. Right
{
Float: right;
Width: 76%;
}

In Firefox, The Right Border CSS settings can only be set with float: Right. in IE, float: Left can be used.
After the settings, I found that the settings are normally displayed under IE, but it was a little worse when I looked at the left under Firefox. Then I adjusted left to 23%, Which is perfect, I found that Firefox has strict requirements, and it is almost impossible.