Move image behind the main content CSS

Question

I have a problem with some css in my website

this is the main CSS source :
/* html selectors ---- */

html, body {
    font-family: 'Arial Unicode MS';
    margin: 0;
    padding: 0;
    background-repeat: repeat-x;
    background-color: white;
    direction: rtl;
    font-size: 10.3pt;
}

h1, h2, h3, h4, h5, h6 {
    margin: 0;
}


h1 {
    font-size: 17pt;
    text-decoration: underline;
    top: 3px;
    padding-bottom: 10px;
    line-height: 25px;
}

h2 {
    font-family: david;
    font-size: 11pt;
    color: #191970;
}

h3 {
    font-size: 16pt;
    color: white;
    margin-left: 15px;
    font-weight: bold;
    margin-bottom: 20px;
    padding-right: 30px;
    padding-top: -55px;
    font-family: 'Arial Unicode MS';
}



/*page -----------*/
#page {
    width: 900px;
    padding: 0px;
    margin: 0 auto;
    direction: rtl;
    position: relative;
    z-index: 100;
    z-index: 5;
    background-image: url("images/bgimage.png");
}

#leftshadow {
    width: 100px;
    height: 900px;
    background-image: url("images/leftshadow.png");
    position: absolute;
    right: 840px;
    z-index: none;
    top: -25px;
}

#rightshadow {
    width: 100px;
    height: 900px;
    background-image: url("images/rightshadow.png");
    position: absolute;
    right: -45px;
    z-index: none;
    top: -25px;
}

My question is how can I move the image-shdow back, behind the main content?

I tried a lot with z-index but I couldn't find a solution, can you help me solve thos problem pleas?

Answer 1

You forgot to use a position property in addition to the z-index property .. z-index will not work unless the element which has the z-index property applied to it is positioned using either:

position: relative; position: absolute; position: fixed;

Add one of those (relative preferably in your case) and it will work.