CSS Positioning 70-30 with Inline-Block

Question

I am positioning main-bar and side-bar with 70-30 ratio as under: JSFIDDLE

Answer 1

This is because the white space in-between your inline-block elements you need make them 0 using the font-size property just as follows

body{
    font-size: 0;
}
.main-bar, .side-bar{
    position: relative;
    margin:0; padding: 0;
    outline: 0;
    display: inline-block;
    font-size: 14px;
    border:none;
    background:#CCC
}
.main-bar{width: 70%}
.side-bar{width: 30%}

Working Fiddle