Prijs tabel responsive maken

Hallo allemaal,

Ik heb een website die zich aanpast aan het scherm van de gebruiker.
Nu moet hier een prijs tabel in. Alleen is deze dan niet responsive.
Hoe kan ik die respnsive maken? Ik heb al weat gezocht maar ik kom er niet in uit.

Hier heb ik mijn css code.

[code=language,css]
#fdw-pricing-table {
margin:0 auto;
text-align: center;
width: 928px; /* total computed width */
zoom: 1;
}

#fdw-pricing-table:before, #fdw-pricing-table:after {
content: "";
display: table
}

#fdw-pricing-table:after {
clear: both
}

/* --------------- */

#fdw-pricing-table .plan {
font: 13px 'Lucida Sans', 'trebuchet MS', Arial, Helvetica;
background: #fff;
border: 1px solid #ddd;
color: #333;
padding: 20px;
width: 180px;
float: left;
_display: inline; /* IE6 double margin fix */
position: relative;
margin: 0 5px;
-moz-box-shadow: 0 2px 2px -1px rgba(0,0,0,.3);
-webkit-box-shadow: 0 2px 2px -1px rgba(0,0,0,.3);
box-shadow: 0 2px 2px -1px rgba(0,0,0,.3);
}

#fdw-pricing-table .plan:after {
z-index: -1;
position: absolute;
content: "";
bottom: 10px;
right: 4px;
width: 80%;
top: 80%;
-webkit-box-shadow: 0 12px 5px rgba(0, 0, 0, .3);
-moz-box-shadow: 0 12px 5px rgba(0, 0, 0, .3);
box-shadow: 0 12px 5px rgba(0, 0, 0, .3);
-webkit-transform: rotate(3deg);
-moz-transform: rotate(3deg);
-o-transform: rotate(3deg);
-ms-transform: rotate(3deg);
transform: rotate(3deg);
}

#fdw-pricing-table .popular-plan {
top: -20px;
padding: 40px 20px;
}

/* --------------- */

#fdw-pricing-table .header {
position: relative;
font-size: 20px;
font-weight: normal;
text-transform: uppercase;
padding: 40px;
margin: -20px -20px 20px -20px;
border-bottom: 8px solid;
background-color: #eee;
background-image: -moz-linear-gradient(#fff,#eee);
background-image: -webkit-gradient(linear, left top, left bottom, from(#fff), to(#eee));
background-image: -webkit-linear-gradient(#fff, #eee);
background-image: -o-linear-gradient(#fff, #eee);
background-image: -ms-linear-gradient(#fff, #eee);
background-image: linear-gradient(#fff, #eee);
}

#fdw-pricing-table .header:after {
position: absolute;
bottom: -8px; left: 0;
height: 3px; width: 100%;
content: '';
background-image: url(images/bar.png);
}

#fdw-pricing-table .popular-plan .header {
margin-top: -40px;
padding-top: 60px;
}

#fdw-pricing-table .plan1 .header{
border-bottom-color: #FF7F27;
}

#fdw-pricing-table .plan2 .header{
border-bottom-color: #FF7F27;
}

#fdw-pricing-table .plan3 .header{
border-bottom-color: #FF7F27;
}

#fdw-pricing-table .plan4 .header{
border-bottom-color: #FF7F27;
}

/* --------------- */

#fdw-pricing-table .price{
font-size: 45px;
}

#fdw-pricing-table .monthly{
font-size: 13px;
margin-bottom: 20px;
text-transform: uppercase;
color: #999;
}

/* --------------- */

#fdw-pricing-table ul {
margin: 20px 0;
padding: 0;
list-style: none;
}

#fdw-pricing-table li {
padding: 10px 0;
}

/* --------------- */

#fdw-pricing-table .signup {
position: relative;
padding: 10px 20px;
color: #fff;
font: bold 14px Verdana, Arial, Helvetica;
text-transform: uppercase;
text-decoration: none;
display: inline-block;
background-color: #72ce3f;
-moz-border-radius: 3px;
-webkit-border-radius: 3px;
border-radius: 3px;
text-shadow: 0 -1px 0 rgba(0,0,0,.15);
opacity: .9;
}

#fdw-pricing-table .signup:hover {
opacity: 1;
}

#fdw-pricing-table .signup:active {
-moz-box-shadow: 0 2px 2px rgba(0,0,0,.3) inset;
-webkit-box-shadow: 0 2px 2px rgba(0,0,0,.3) inset;
box-shadow: 0 2px 2px rgba(0,0,0,.3) inset;
}

#fdw-pricing-table .plan1 .signup{
background: #FF7F27;
}

#fdw-pricing-table .plan2 .signup{
background: #FF7F27;
}

#fdw-pricing-table .plan3 .signup{
background: #FF7F27;
}

#fdw-pricing-table .plan4 .signup{
background: #FF7F27;
}
[/code]
Het moet is zijn met @ media screen ofzo.

Hier heb ik een voorbeeld van wat het moet gaan worden.
http://wbpreview.com/previews/WB0S2347C/
Dat het onder elkaar komt staan.
Moet ik dan werken met procenten?

Ik hoop dat iemand me kan helpen.