I'm designing my first page using CSS3, and I'm running into a snag. I used this question and answer to create a neat looking background for the body of my site. This worked fine until I added a content class. This caused the CSS gradient to not quite reach the end of the page (scroll down to see the effect). Here is my CSS:
html{
    height: 100%
}
body {
    background: #c5deea; /* old browsers */
    background: -moz-linear-gradient(top, #c5deea 0%, #8abbd7 31%, #066dab 100%); /* firefox */
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#c5deea), color-stop(31%,#8abbd7), color-stop(100%,#066dab)); /* webkit */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#c5deea', endColorstr='#066dab',GradientType=0 ); /* ie */
    height: 100%;
    margin: 0;
    background-repeat: no-repeat;
}
#content{
    -moz-box-shadow: 0 0 5px #888;
    -webkit-box-shadow: 0 0 5px#888;
    box-shadow: 0 0 5px #888;
    background: white;
    margin-left: auto;
    margin-right: auto;
    padding: .5%;
    margin-top: 2%;
    margin-bottom: 2%;
    width: 50%;
}
h1, h2, h3 {
    color: #066dab;
}   
Can anyone tell me what has gone wrong, and how to fix it? I should note that I am very new to CSS, let alone CSS3; so, any insights are appreciated
 
     
    