브라우저 뷰포트에 배경이미지가 꽉 차게 보여지려면 아래와 같이 min-height 값을 설정한다.
<!DOCTYPE html>
<html>
<title>Full Background Cover</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
body, html {
margin: 0;
padding: 0;
height: 100%;
}
.bgimg {
border: 0;
padding: 0;
background-image: url('image.jpg');
min-height: 100%;
background-position: center;
background-size: cover;
}
</style>
<body>
<div class="bgimg"></div>
</body>
</html>첫 번째 방법
html {
background: url(images/bg.jpg) no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}두 번째 방법
img.bg {
/* Set rules to fill background */
min-height: 100%;
min-width: 1024px;
/* Set up proportionate scaling */
width: 100%;
height: auto;
/* Set up positioning */
position: fixed;
top: 0;
left: 0;
}
@media screen and (max-width: 1024px) { /* Specific to this particular image */
img.bg {
left: 50%;
margin-left: -512px; /* 50% */
}
}세 번째 방법
<img src="images/bg.jpg" id="bg" alt="">#bg {
position: fixed;
top: 0;
left: 0;
/* Preserve aspet ratio */
min-width: 100%;
min-height: 100%;
}네 번째 방법
<div id="bg">
<img src="images/bg.jpg" alt="">
</div>#bg {
position: fixed;
top: -50%;
left: -50%;
width: 200%;
height: 200%;
}
#bg img {
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
margin: auto;
min-width: 50%;
min-height: 50%;
}다섯 번째 방법(jQuery 메서드 사용)
<img src="images/bg.jpg" id="bg" alt="">#bg { position: fixed; top: 0; left: 0; }
.bgwidth { width: 100%; }
.bgheight { height: 100%; }$(window).load(function() {
var theWindow = $(window),
$bg = $("#bg"),
aspectRatio = $bg.width() / $bg.height();
function resizeBg() {
if ( (theWindow.width() / theWindow.height()) < aspectRatio ) {
$bg
.removeClass()
.addClass('bgheight');
} else {
$bg
.removeClass()
.addClass('bgwidth');
}
}
theWindow.resize(resizeBg).trigger("resize");
});
