新手问题在这里。试着学习基础知识。我有一个简单的页面,页眉是一个页脚和一个容器。在那个容器中,我想要一个图像,我希望它居中。使用保证金:0自动没有这样做。我试过明确给容器一个宽度,仍然没有好处。感谢。
html,
body {
margin: 0px;
padding: 0px;
height: 100vh;
}
#header {
position: relative;
height: 10%;
width: 100%;
background-color: yellow;
}
#footer {
position: relative;
height: 10%;
width: 100%;
background-color: lightgray;
}
#container {
height: 80%;
width: 100vw;
background-color: red;
}
#imagewrap {
position: absolute;
border: 1px solid #818181;
z-index: 2;
height: 75%;
display: block;
margin: 0 auto;
}

<div id="header"> </div>
<div id="container">
<div id="imagewrap">
<img src="Images/01Folder/Image.jpg" height="100%" id="front" />
</div>
</div>
<div id="footer"> </div>
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答案 0 :(得分:0)
您可以将text-align: center;
代替margin: 0 auto;
添加到imagewrap
html, body {
margin: 0px;
padding: 0px;
height: 100vh;
}
#header {
position: relative;
height: 10%;
width: 100%;
background-color: yellow;
}
#footer {
position: relative;
height: 10%;
width: 100%;
background-color: lightgray;
display: block;
}
#container {
height: 80%;
width: 100vw;
background-color: red;
}
#imagewrap{
position: absolute;
border: 1px solid #818181;
z-index: 2;
height: 75%;
display: block;
width: 100%;
text-align: center;
}
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<div id="header">
</div>
<div id="container">
<div id="imagewrap">
<img src="Images/01Folder/Image.jpg" height="100%" id="front" />
</div>
</div>
<div id="footer">
</div>
&#13;
答案 1 :(得分:0)
删除position: absolute;
并将宽度添加到imagewrap
类。width: 300px;
html, body {
margin: 0px;
padding: 0px;
height: 100vh;
}
#header {
position: relative;
height: 10%;
width: 100%;
background-color: yellow;
}
#footer {
position: relative;
height: 10%;
width: 100%;
background-color: lightgray;
}
#container {
height: 80%;
width: 100vw;
background-color: red;
}
#imagewrap{
width: 300px;
border: 1px solid #818181;
z-index: 2;
height: 75%;
display: block;
margin: 0 auto;
}
&#13;
<div id="header">
</div>
<div id="container">
<div id="imagewrap">
<img src="Images/01Folder/Image.jpg" height="100%" id="front" />
</div>
</div>
<div id="footer">
</div>
&#13;
答案 2 :(得分:0)
尝试该容器的背景图像并将其置于中心位置。 请根据您的要求更改背景网址
html, body {
margin: 0px;
padding: 0px;
height: 100vh;
}
#header {
position: relative;
height: 10%;
width: 100%;
background-color: yellow;
}
#footer {
position: relative;
height: 10%;
width: 100%;
background-color: lightgray;
}
#container {
height: 80%;
width: 100vw;
background-color: red;
background-image: url(http://clockworkmoggy.com/wp-content/uploads/image00.png);
background-repeat: no-repeat;
background-position: center;
}
#imagewrap{
position: absolute;
border: 1px solid #818181;
z-index: 2;
height: 75%;
display: block;
margin: 0 auto;
}
<div id="header">
</div>
<div id="container">
<div id="imagewrap">
</div>
</div>
<div id="footer">
</div>
答案 3 :(得分:0)
只需移除margin:0 auto;
并替换text-align: center;
中的#imagewrap
即可。它会工作!!
请查看以下JSFiddle代码以供参考。
html, body {
margin: 0px;
padding: 0px;
height: 100vh;
}
#header {
position: relative;
height: 10%;
width: 100%;
background-color: yellow;
}
#footer {
position: relative;
height: 10%;
width: 100%;
background-color: lightgray;
}
#container {
height: 80%;
width: 100vw;
background-color: red;
}
#imagewrap{
border: 1px solid #818181;
z-index: 2;
height: 75%;
display: block;
text-align: center;
}
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<body>
<div id="header"> </div>
<div id="container">
<div id="imagewrap">
<img src="https://assets.servedby-buysellads.com/p/manage/asset/id/29708" height="100%" id="front" />
</div>
</div>
<div id="footer"> </div>
</body>
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