スクロールを上下にフェードする方法を探していました。上下に2つのpngを使用する方法を知っていますが、問題は、無地のページをスクロールするときにのみ役立つように見えることです。しかし、背景画像があるページで発生させたい..
何か案は？可能であれば？JS、HTML5、CSS?
効果を説明する図は次のとおりです。
質問する
3025 次
4 に答える
1
これはあなたが探しているものかもしれません。
デモ
HTML
<div class="wrap">
<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Donec quam felis, ultricies nec, pellentesque eu, pretium quis, sem. Nulla consequat massa quis enim. Donec pede justo, fringilla vel, aliquet nec, vulputate eget, arcu. In enim justo, rhoncus ut, imperdiet a, venenatis vitae, justo. Nullam dictum felis eu pede mollis pretium. Integer tincidunt. Cras dapibus. Vivamus elementum semper nisi. Aenean vulputate eleifend tellus. Aenean leo ligula, porttitor eu, consequat vitae, eleifend ac, enim. Aliquam lorem ante, dapibus in, viverra quis, feugiat a, tellus. Phasellus viverra nulla ut metus varius laoreet. Quisque rutrum. Aenean imperdiet. Etiam ultricies nisi vel augue. Curabitur ullamcorper ultricies nisi. Nam eget dui. Etiam rhoncus. Maecenas tempus, tellus eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing sem neque sed ipsum. Nam quam nunc, blandit vel, luctus pulvinar, hendrerit id, lorem. Maecenas nec odio et ante tincidunt tempus. Donec vitae sapien ut libero venenatis faucibus. Nullam quis ante. Etiam sit amet orci eget eros faucibus tincidunt. Duis leo. Sed fringilla mauris sit amet nibh. Donec sodales sagittis magna.</p>
<div class="fader"></div>
</div>
CSS
.wrap {
position: relative;
background: url(http://lorempixel.com/output/fashion-q-c-640-480-3.jpg);
font-family: Helvetica, 'Helvetica Neue', sans-serif;
}
.wrap p {
color: white;
}
.fader {
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
background: linear-gradient(top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0) 30%, rgba(0,0,0,0) 70%, rgba(0,0,0,0.7) 100%);
background: -webkit-linear-gradient(top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0) 30%, rgba(0,0,0,0) 70%, rgba(0,0,0,0.7) 100%);
background: -moz-linear-gradient(top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0) 30%, rgba(0,0,0,0) 70%, rgba(0,0,0,0.7) 100%);
pointer-events: none;
}
編集:pointer-events: none通常のテキスト選択を可能にするために CSS に追加されました。
于 2012-08-25T02:18:39.203 に答える
0
上下のbgの色と一致する透明なグレーグラデーション画像を使用できます： http ：//www.cssplay.co.uk/menu/fade_scroll.html
于 2012-08-24T22:00:56.513 に答える
0
これが私が試したもので、うまくいくようです：
<html>
<head>
<title></title>
<style type="text/css">
div.bg
{
position: absolute;
top: 0px;
left: 0px;
z-index: 0;
width: 800px;
height: 600px;
background: url([your_background_image]);
}
div.txt
{
position: absolute;
top: 0px;
left: 50px;
z-index: 2;
width: 700px;
height: 600px;
font-family: Arial;
font-size: 30px;
color: #FFFFFF;
font-weight: bold;
}
div.fader_in
{
position: absolute;
top: 0px;
left: 0px;
z-index: 4;
width: 800px;
height: 100px;
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#000000', endColorstr='#FFFFFF'); /* for IE */
background: -webkit-gradient(linear, left top, left bottom, from(#000000), to(#FFFFFF)); /* for webkit browsers */
background: -moz-linear-gradient(top, #000000, #FFFFFF); /* for firefox 3.6+ */
opacity: .5;
-ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=50)";
}
div.between
{
position: absolute;
top: 100px;
left: 0px;
z-index: 4;
width: 800px;
height: 400px;
background: #FFFFFF;
opacity: .5;
-ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=50)";
}
div.fader_out
{
position: absolute;
top: 500px;
left: 0px;
z-index: 4;
width: 800px;
height: 100px;
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#FFFFFF', endColorstr='#000000'); /* for IE */
background: -webkit-gradient(linear, left top, left bottom, from(#FFFFFF), to(#000000)); /* for webkit browsers */
background: -moz-linear-gradient(top, #FFFFFF, #000000); /* for firefox 3.6+ */
opacity: .5;
-ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=50)";
}
</style>
</head>
<body>
<div class="bg">
</div>
<div class="txt">Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
</div>
<div class="fader_in"></div>
<div class="between"></div>
<div class="fader_out"></div>
</body>
</html>
于 2012-08-24T09:48:21.287 に答える
0
興味深い質問...厄介なことに、実際のテキストレイヤーに不透明度マスクを適用するなど、使いやすさの問題を引き起こさないような方法でそれを行うことはできません。ただし、重いJavaScript / Canvasを使用して実現することも、この狂った方法を使用することもできます（これは、背景画像をに設定できる場合にのみ機能します）background-attachmentfixed：
<!DOCTYPE html>
<html>
<head>
<title></title>
<style type="text/css">
body {
background: url(http://maxcdn.crazyleafdesign.com/blog/wp-content/uploads/2008/09/cool-wallpapers-for-designers-29.jpg) fixed;
}
#scrollable {
position: relative;
width: 400px;
height: 200px;
margin: 50px;
}
#scrollable .viewport {
position: relative;
overflow: auto;
width: 100%;
height: 100%;
}
#scrollable .text {
color: #fff;
}
#scrollable .text p {
margin: 0; padding: 0; margin-bottom: 20px;
}
#scrollable .top {
position: absolute; left: 0; top: 0; right: 0; height: 40px;
}
#scrollable .bot {
position: absolute; left: 0; bottom: 0; right: 0; height: 40px;
}
#scrollable .top div, #scrollable .bot div {
position: relative;
background: url(http://maxcdn.crazyleafdesign.com/blog/wp-content/uploads/2008/09/cool-wallpapers-for-designers-29.jpg) fixed;
height: 2px;
border: 0;
}
#scrollable .l01 { opacity: 1; }
#scrollable .l02 { opacity: 0.95; }
#scrollable .l03 { opacity: 0.9; }
#scrollable .l04 { opacity: 0.85; }
#scrollable .l05 { opacity: 0.8; }
#scrollable .l06 { opacity: 0.75; }
#scrollable .l07 { opacity: 0.7; }
#scrollable .l08 { opacity: 0.65; }
#scrollable .l09 { opacity: 0.6; }
#scrollable .l10 { opacity: 0.55; }
#scrollable .l11 { opacity: 0.5; }
#scrollable .l12 { opacity: 0.45; }
#scrollable .l13 { opacity: 0.4; }
#scrollable .l14 { opacity: 0.35; }
#scrollable .l15 { opacity: 0.3; }
#scrollable .l16 { opacity: 0.25; }
#scrollable .l17 { opacity: 0.2; }
#scrollable .l18 { opacity: 0.15; }
#scrollable .l19 { opacity: 0.1; }
#scrollable .l20 { opacity: 0.05; }
</style>
</head>
<body>
<div id="scrollable">
<div class="viewport">
<div class="text">
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse et blandit ligula. Vestibulum sodales porttitor sollicitudin. Etiam turpis purus, tincidunt rhoncus interdum ut, mollis vitae mi. Nulla a mauris et orci scelerisque egestas a nec metus. Cras a massa id quam vehicula sodales. Etiam aliquam justo eu ligula volutpat blandit. Sed sagittis, arcu ut pulvinar blandit, purus mauris euismod felis, eget rutrum nunc arcu vitae augue. Cras magna quam, consectetur at lobortis quis, interdum eget tortor.</p>
<p>Pellentesque tincidunt molestie urna, ut lacinia justo cursus a. Nunc mauris sem, dignissim id mollis vel, adipiscing nec purus. Fusce feugiat sem et neque cursus pretium. Curabitur tellus nunc, blandit sit amet aliquam tempus, scelerisque eu nulla. Vestibulum imperdiet nunc nec purus dignissim vitae suscipit orci pharetra. Mauris sit amet ante sit amet odio ultricies interdum auctor sit amet nibh. Integer ut sem leo, at vulputate felis. Mauris sit amet neque tortor. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos.</p>
<p>Mauris lectus leo, luctus non malesuada vitae, facilisis vitae est. Maecenas sed neque lorem, vitae dignissim ante. Cras non lectus sed orci ornare ultricies at ac lectus. Donec quis quam mi, id ornare mauris. Praesent aliquet turpis hendrerit dui fringilla ullamcorper. Morbi facilisis urna non dui bibendum non semper neque dignissim. Vestibulum non pretium justo. Phasellus magna velit, commodo ut facilisis et, hendrerit vitae sem. Curabitur commodo eros a dolor sagittis egestas. Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
</div>
</div>
<div class="top">
<div class="l01"></div><div class="l02"></div><div class="l03"></div>
<div class="l04"></div><div class="l05"></div><div class="l06"></div>
<div class="l07"></div><div class="l08"></div><div class="l09"></div>
<div class="l10"></div><div class="l11"></div><div class="l12"></div>
<div class="l13"></div><div class="l14"></div><div class="l15"></div>
<div class="l16"></div><div class="l17"></div><div class="l18"></div>
<div class="l19"></div><div class="l20"></div>
</div>
<div class="bot">
<div class="l20"></div><div class="l19"></div><div class="l18"></div>
<div class="l17"></div><div class="l16"></div><div class="l15"></div>
<div class="l14"></div><div class="l13"></div><div class="l12"></div>
<div class="l11"></div><div class="l10"></div><div class="l09"></div>
<div class="l08"></div><div class="l07"></div><div class="l06"></div>
<div class="l05"></div><div class="l04"></div><div class="l03"></div>
<div class="l02"></div><div class="l01"></div>
</div>
</div>
</body>
</html>
ただし、これまでに投稿されたこれらの方法（私のものを含む）を使用することはお勧めしません。これらはすべて、テキストの上にフローティングレイヤーがあるため、テキストの選択とスクロールバーに干渉します。これはあらゆる種類のユーザビリティの問題を引き起こす可能性があり、基本的にユーザーを困らせるだけです...これはほとんどのWebサイトの目的ではありません;）
于 2012-08-25T11:33:23.247 に答える