How can get the div background image to scale to t

问题:

I am trying to make the background image of the div header scale to the size of the page. Here is the current css:

.Header {
    background-image: url(Images/logo.png);
    height: 160px;
    width: 960px;
    margin-left: auto;
    margin-right: auto;
    margin-top: 20px;
}

回答1:

Make the position as absolute of the header and width as 100%

position:absolute;
width:100%;