could you please explain to me why these 4 divs are not staying next to each other? There are 4 divs, I set their width to 25% so they fill the whole page and yet 1 div is pushed under the others. I have to set the width to 24% to have them stand next to each other. How come? In my book 4x25% = 100%.
.four {
display: inline-block;
vertical-align: top;
width: 25%;
}