значения свойства:
* {
margin
:
0
;
padding
}
.main {
height
600px
width
900px
position
absolute
top
50%
left
margin-top
-300px
margin-left
-450px
.wrapper {
33.3%
100%
float
#div
1
, #div
2
3
{
200px
relative
-100px
background-color
#3BA9DE
border
2px
solid
#808080
outline
5px
#F00
* { margin: 0; padding: 0; } .main { height: 600px; width: 900px; position: absolute; top: 50%; left: 50%; margin-top: -300px; margin-left: -450px; } .wrapper { width: 33.3%; height: 100%; float: left; } #div1, #div2, #div3 { height: 200px; width: 200px; float: left; position: relative; top: 50%; left: 50%; margin-top: -100px; margin-left: -100px; background-color: #3BA9DE; border: 2px solid #808080; } #div1 { outline: 5px solid #F00; }