我试图查看其他答案,但没有帮助。我的背景是动态的,因此图像的大小会发生变化,因此我需要保持纵横比,以便看到整个图像。这是我的CSS:
.image_submit_div {
border: 1px solid #ccc;
display: inline-block;
padding: 20px 50px;
width: 55%;
height: 320px;
cursor: pointer;
background: url('something.jpg'); /* this changes */
margin: 0 0 25px;
}
HTML
<label for="id_image" class="image_submit_div">
目前,根据图像,有时很多都会被切掉。我希望图像缩小,以便可以完全看到。有什么想法吗?
答案 0 :(得分:25)
使用background-size: cover;
覆盖整个元素,同时保持宽高比:
special_agg_brand
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.background-1,
.background-2,
.background-3 {
/* Set the background image, size, and position. */
background-image: url('//via.placeholder.com/350x150');
background-size: cover;
background-position: center;
/* Or, use the background shortcut. */
background: url('//via.placeholder.com/350x150') center/cover;
margin: 20px;
border: 1px solid rgba(0, 0, 0, 0.3);
}
.background-1 {
width: 300px;
height: 200px;
}
.background-2 {
width: 200px;
height: 50px;
}
.background-3 {
width: 100px;
height: 200px;
}
&#13;
如果要在保持纵横比的同时显示整个图像,请改用background-size: contain;
:
<div class="background-1"></div>
<div class="background-2"></div>
<div class="background-3"></div>
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.background-1,
.background-2,
.background-3 {
/* Set the background image, size, position, repeat, and color. */
background-image: url('//via.placeholder.com/350x150');
background-size: contain;
background-position: center;
background-repeat: no-repeat;
background-color: #fbfbfb;
/* Or, use the background shortcut. */
background: #fbfbfb url('//via.placeholder.com/350x150') no-repeat center/contain;
margin: 20px;
border: 1px solid rgba(0, 0, 0, 0.3);
}
.background-1 {
width: 300px;
height: 200px;
}
.background-2 {
width: 200px;
height: 50px;
}
.background-3 {
width: 100px;
height: 200px;
}
&#13;
答案 1 :(得分:8)
如果要查看整个图像并将其拉伸到div的全宽或高度(取决于图像的纵横比),请使用background-size:contain;
。
但是如果你想用背景图片覆盖整个div并且不介意图像被裁剪,那么请改用background-size:cover;
。
.image_submit_div {
border: 1px solid #ccc;
display: inline-block;
padding: 20px 50px;
width: 55%;
height: 320px;
cursor: pointer;
background: url('http://www.chinabuddhismencyclopedia.com/en/images/thumb/b/b8/Nature.jpg/240px-Nature.jpg'); /* this changes */
margin: 0 0 25px;
background-repeat:no-repeat;
background-position:center;
background-size:contain;
}
&#13;
<label for="id_image" class="image_submit_div">
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