正如标题所述，我有一个img元素，其中包含一个标头元素包含的徽标。当您将鼠标悬停在上方时，我想让图像展开，或者可能只是具有脉冲型效果，但是为了简单起见，我首先将鼠标悬停在其上方来展开图像。我对如何通过增加最大宽度并对其进行过渡设置有一个想法。
但是最重要的是，我试图弄清楚如何在不扩展标头的情况下扩展img元素。我怎样才能做到这一点？代码如下。
请注意，如果有什么不同，我正在运行Bootstrap 4。
<!DOCTYPE html>
<html>
<head>
<!-- Meta & Other -->
<title>Infamous | Home</title>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="description" content="Infamous official website">
<meta name="keywords" content ="Infamous, Minecraft, Server, Game, Gaming">
<meta name="author" content="MrWardy">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css" integrity="sha384-9aIt2nRpC12Uk9gS9baDl411NQApFmC26EwAOH8WgZl5MYYxFfc+NcPb1dKGj7Sk" crossorigin="anonymous">
<link rel="stylesheet" href="./Stylesheets/default.css">
<!-- Fonts -->
<script src="https://kit.fontawesome.com/35fad75205.js" crossorigin="anonymous"></script>
<link href="https://fonts.googleapis.com/css2?family=Kanit&display=swap" rel="stylesheet">
</head>
<body>
<header>
<nav id="header-nav" class="navbar-nav">
<div class="container grid-container">
<a class="active navlink" href="#"><i class="fas fa-home"></i> Home</a>
<a class="navlink" href="#rules"><i class="fas fa-book"></i> Rules</a>
<a class="navlink" href="#vote"><i class="fas fa-star"></i> Vote</a>
<a class="navlink" href="#store"><i class="fas fa-tags"></i> Store</a>
<a class="navlink" href="https://discord.gg/ZnN3f4P" target="_blank"><i class="fab fa-discord"></i> Discord</a>
<a class="navlink" href="https://www.youtube.com/channel/UCFvs3IZNgziCe0WARpJpYVw" target="_blank"><i class="fab fa-youtube"></i> YouTube</a>
</div>
</nav>
<!--
<div id="heading">
<img class="img-fluid" src="./Images/rome.png" alt="Minecraft Screenshot">
</div>
-->
<img class="heading-banner mx-auto d-block" src="https://i.imgur.com/0h5g3bd.png" alt="Infamous banner">
</header>
<!-- JavsScript -->
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js" integrity="sha384-OgVRvuATP1z7JjHLkuOU7Xw704+h835Lr+6QL9UvYjZE3Ipu6Tp75j7Bh/kR0JKI" crossorigin="anonymous"></script>
</body>
</html>id name
1 A
2 B
3 C
4 C
5 B
6 A
7 A
8 D
答案 0 :(得分：0)
* {
box-sizing: border-box;
}
body {
/* background-color: #393939*/
background: url("../Images/background.jpg") repeat;
}
/*
-=-=- NAVIGATION BAR -=-=-
*/
#header-nav {
background-color: #262626;
font-family: 'Kanit', sans-serif;
font-size: 1.1em;
text-transform: uppercase;
}
.grid-container {
display: grid;
grid-template-columns: 1fr 1fr 1fr 1fr 1fr 1fr;
}
.grid-container > a {
text-align: center;
}
.navlink {
display: inline-block;
color: #C9C9C9;
padding: 10px;
padding-bottom: 10px;
background:
linear-gradient(white, white)
bottom
/100% 0px
no-repeat;
transition: 0.2s all;
}
.navlink:hover {
color: #FFF;
text-decoration: none;
background-size: 100% 4px;
}
.active {
color: #FFF;
}
/*
-=-=- HEADING BANNER -=-=-
*/
header {
height: 90vh;
background: url("https://i.imgur.com/CYyE6bN.png") center;
border-bottom: thick solid #461F66;
}
.heading-banner {
max-width: 75%;
padding: 5%;
filter: drop-shadow(8px 8px 20px #000);
z-index: 9;
}
.heading-banner:hover {
max-width: 80%;
}<!DOCTYPE html>
<html>
<head>
<!-- Meta & Other -->
<title>Infamous | Home</title>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="description" content="Infamous official website">
<meta name="keywords" content ="Infamous, Minecraft, Server, Game, Gaming">
<meta name="author" content="MrWardy">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css" integrity="sha384-9aIt2nRpC12Uk9gS9baDl411NQApFmC26EwAOH8WgZl5MYYxFfc+NcPb1dKGj7Sk" crossorigin="anonymous">
<link rel="stylesheet" href="./Stylesheets/default.css">
<!-- Fonts -->
<script src="https://kit.fontawesome.com/35fad75205.js" crossorigin="anonymous"></script>
<link href="https://fonts.googleapis.com/css2?family=Kanit&display=swap" rel="stylesheet">
</head>
<body>
<header>
<nav id="header-nav" class="navbar-nav">
<div class="container grid-container">
<a class="active navlink" href="#"><i class="fas fa-home"></i> Home</a>
<a class="navlink" href="#rules"><i class="fas fa-book"></i> Rules</a>
<a class="navlink" href="#vote"><i class="fas fa-star"></i> Vote</a>
<a class="navlink" href="#store"><i class="fas fa-tags"></i> Store</a>
<a class="navlink" href="https://discord.gg/ZnN3f4P" target="_blank"><i class="fab fa-discord"></i> Discord</a>
<a class="navlink" href="https://www.youtube.com/channel/UCFvs3IZNgziCe0WARpJpYVw" target="_blank"><i class="fab fa-youtube"></i> YouTube</a>
</div>
</nav>
<!--
<div id="heading">
<img class="img-fluid" src="./Images/rome.png" alt="Minecraft Screenshot">
</div>
-->
<img class="heading-banner mx-auto d-block" src="https://i.imgur.com/0h5g3bd.png" alt="Infamous banner">
</header>
<!-- JavsScript -->
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js" integrity="sha384-OgVRvuATP1z7JjHLkuOU7Xw704+h835Lr+6QL9UvYjZE3Ipu6Tp75j7Bh/kR0JKI" crossorigin="anonymous"></script>
</body>
</html>
我在标头中添加一个高度值，您可以设置所需的高度