我的登录表单有问题，当浏览器窗口出现较小的图像时，出现在登录表单头部的图像会停止正确显示。 正确观点: http://im87.gulfup.com/bYOI29.png
当我更改浏览器窗口大小时: http://im59.gulfup.com/95cyji.jpg
html代码:
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="description" content="login panel">
<meta name="author" content="WhiteOne">
<title>Login</title>
<!-- Bootstrap Core CSS -->
<link href="css/bootstrap.min.css" rel="stylesheet">
<!-- Custom CSS -->
<link href="css/sb-admin-2.css" rel="stylesheet">
<!-- Custom Fonts -->
<link href="font-awesome-4.2.0/css/font-awesome.min.css" rel="stylesheet" type="text/css">
<!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>
<script src="https://oss.maxcdn.com/libs/respond.js/1.4.2/respond.min.js"></script>
<![endif]-->
<!-- icon location -->
<link rel="stylesheet" type="text/css" href="styles/icon.css" />
<!-- Set Full Background -->
<link rel="stylesheet" type="text/css" href="styles/background.css" />
<link rel="stylesheet" type="text/css" href="styles/icon-login.css" />
</head>
<body>
<div style="margin: 100px auto 0 auto;">
<div class="container">
<div class="row">
<!-- login box start -->
<div class="col-md-4 col-md-offset-4" id="loginbox">
<div class="login-panel panel panel-default">
<div class="panel-heading">
<img src="icons/Instagram.png" id="instagram-login">
<img src="icons/Twitter-icon.png" id="twitter-login">
<img src="icons/Facebook-icon.png" id="Fb-login">
<h3 class="panel-title" >Please Sign In</h3>
</div>
<div class="panel-body">
<form role="form" method="post" action="">
<fieldset>
<div class="form-group">
<span class=usericon>
<i class="fa fa-user"></i>
</span>
<input class="form-control" id="username" placeholder="Username" name="username" type="text" autofocus required>
</div>
<div class="form-group">
<span class="passwordicon">
<i class="fa fa-lock"></i>
</span>
<input class="form-control" id="password" placeholder="Password" name="password" type="password" value="" required>
</div>
<input type="submit" name="Login" value="login" class="btn btn-lg btn-success btn-block" id="login">
</fieldset>
</form>
</div>
</div>
</div><!-- End of login box -->
</div><!-- end of row class -->
</div><!-- end of container -->
</body>
</html>
社交图标位置的 css 代码:icon-login.css
#instagram-login {
left: 250px;
opacity: 0.95;
position: absolute;
top: -16px;
}
#instagram-login:hover {
opacity: 1;
}
#twitter-login {
left: 195px;
opacity: 0.925;
position: absolute;
top: -12px;
}
#twitter-login:hover {
opacity: 1;
}
#Fb-login {
left: 140px;
opacity: 0.92;
position: absolute;
top: -12px;
}
#Fb-login:hover {
opacity: 1;
}
.panel-heading {
position: relative;
}
我试过相对于面板标题而不是固定的，但它也不起作用。
最佳答案
您应该做的第一件事是将图像扭曲成一个链接，然后将所有链接包装在一个带有 social 类的 div 中
<div class="social">
<a href="#"><img src="Instagram.png"></a>
<a href="#"><img src="Twitter-icon.png"></a>
<a href="#"><img src="Facebook-icon.png"></a>
</div>
要绝对定位图标，您应该为父 div (#loginbox) 提供以下内容:
#loginbox {
position: relative;
}
然后，您可以将这些样式应用于社交 div
.social img {
width: 50px;
}
.social a {
display: inline-block;
float: right;
}
.social {
position: absolute;
right: 13px;
top: 0;
}
关于html - 如何使用 CSS 使图像始终相对于 div，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/26657330/