Footer am unteren Browserrand positionieren

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
}
 
/* LAYOUT */
 
#wrapper {
    min-height: 100%;
    position: relative;
}
 
#header {
    height: 175px;
    background: red;
}
 
#container {
    width: 980px;
    margin: 0 auto;
    background: blue;
    padding-bottom: 335px;
}
 
#footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 355px;
    background: green;
}