如何保持背景图片的长宽比?

我尝试查看其他答案,但没有帮助。我的背景是动态的,因此图像的大小会改变,因此我需要保持宽高比,以便可以看到整个图像。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;

}

<label for="id_image" class="image_submit_div">

此刻取决于图像,有时很多图像被切除。我希望缩小图像以便可以完全看到。任何的想法?

回答:

使用background-size: cover;覆盖整个元件,同时保持纵横比

.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;

}

<div class="background-1"></div>

<div class="background-2"></div>

<div class="background-3"></div>

如果要显示整个图像,同时保持宽高比,请background-size:contain;改用:

.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;

}

<div class="background-1"></div>

<div class="background-2"></div>

<div class="background-3"></div>

以上是 如何保持背景图片的长宽比? 的全部内容, 来源链接: utcz.com/qa/420401.html

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