提问人:HenrijsS 提问时间:3/15/2021 最后编辑:HenrijsS 更新时间:4/16/2021 访问量:1239
CSS 图像 max-height 不保持纵横比
CSS image max-height doesn't keep aspect ratio
问:
我有一个弹出式模态,它有一个固定的位置,宽度和高度为 100%。
模态中的内容具有 和max-width: 90%;
max-height: 90%
图像也具有这些值,但问题是它在更改高度时不保持纵横比,但在更改宽度时保持纵横比。(视频解释了这一切)
#popup {
display: flex;
justify-content: center;
align-items: center;
position: fixed;
top: 0;
bottom: 0;
opacity: 1;
background: rgba(0, 0, 0, 0.5);
width: 100%;
height: 100%;
}
.popupModal {
max-width: 90%;
max-height: 90%;
background: linear-gradient(0deg, #fff, #f0f0f0);
position: relative;
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
transform: translateY(-100px);
transition: transform 0.5s;
}
.closeBtn {
position: absolute;
top: -25px;
right: -25px;
border-radius: 50%;
background-color: #fff;
font-size: 24px;
font-weight: bold;
color: $blue-dark;
height: 50px;
width: 50px;
display: flex;
justify-content: center;
align-items: center;
cursor: pointer;
-webkit-box-shadow: 0 0 27px -10px rgba(0, 0, 0, 0.95);
-moz-box-shadow: 0 0 27px -10px rgba(0, 0, 0, 0.95);
box-shadow: 0 0 27px -10px rgba(0, 0, 0, 0.95);
transition: box-shadow 0.2s ease;
}
.closeLine {
position: absolute;
left: 0;
top: 0;
right: 0;
bottom: 0;
margin: auto;
background-color: #072742;
height: 4px;
width: 50%;
}
#closeLineOne {
transform: rotate(45deg);
}
#closeLineTwo {
transform: rotate(135deg);
}
.closeLine:hover {
-webkit-box-shadow: none;
-moz-box-shadow: none;
box-shadow: none;
}
.popupActive {
opacity: 1;
z-index: 5000;
transition: z-index 0s 0s, opacity 0.5s 0s;
}
.popupModal {
transform: translateY(0);
}
.metalModal {
height: 80%;
background: transparent;
}
.metalPopup {
display: flex;
flex-direction: column;
// It works if I change the max-height to height, but it then stretches out all other images.
max-height: 100%;
max-width: 100%;
position: relative;
}
.metalImg {
max-width: 100%;
flex: 1;
object-fit: cover;
max-height: 100%;
width: auto;
height: auto;
}
.metalName {
width: 100%;
height: 70px;
display: flex;
justify-content: center;
align-items: center;
font-weight: bold;
color: white;
font-size: 24px;
background-color: rgba(0, 0, 0, 0.75);
position: absolute;
bottom: 0;
left: 0;
}
<div id="popup" class="popupActive">
<div class="popupModal metalModal">
<div class="metalPopup">
<div class="closeBtn">
<span id="closeLineOne" class="closeLine"></span>
<span id="closeLineTwo" class="closeLine"></span>
</div>
<img src="https://i.imgur.com/BeWSEDB.jpg" class="metalImg" />
<div class="metalName">
Metal name
</div>
</div>
</div>
</div>
编辑:
当我给类时,图像保持纵横比。但它使宽度保持为原始宽度,即使图像是整个块的一小部分。.metalPopup
display: block
img
^ 请看这里。
答:
-1赞
Mirronelli
3/15/2021
#1
这个怎么样。它对你有用吗?
img {
width: auto;
height: auto;
max-width:90%;
max-height:90%;
}
评论
0赞
HenrijsS
3/15/2021
它已经具有这些值。高度根据宽度重新缩放,但反之则不然,
2赞
Tonic
4/9/2021
#2
如果您设置高度,通常最好将宽度设置为自动,反之亦然。
.yourclass {
max-height: 90%;
max-width: (either unset or auto)
}
评论
0赞
HenrijsS
4/9/2021
我通常遵循这个准则,但自从这个问题以来,我已经将其添加到使用它的每个元素中。
0赞
Tonic
4/9/2021
如果不是,你介意在这里更新代码吗?所以我可以玩弄它并进一步帮助你
0赞
HenrijsS
4/9/2021
是的。没有太大变化,因为我仍然希望这个问题能得到回答。但这是我拥有的最新代码。我现在正在修补它。
0赞
Tonic
4/9/2021
好的,我为它所做的只是给出 .popupmodal max-width: 90%;max-height:自动;
3赞
HenrijsS
4/9/2021
#3
所以我只是将 max-height 更改为 just,它现在似乎可以工作并且不会拉伸图像,因为 now 具有 max-height 可以删除 (这是现在,因为如果我愿意,它不会响应模式居中,但仍然可以添加到相对定位并减去它的高度)。.metalPopup
height: 100%;
.metalImg
.metalName
position: relative
#popup {
display: flex;
justify-content: center;
align-items: center;
position: fixed;
top: 0;
bottom: 0;
opacity: 1;
background: rgba(0, 0, 0, 0.5);
width: 100%;
height: 100%;
}
.popupModal {
max-width: 90%;
max-height: 90%;
background: linear-gradient(0deg, #fff, #f0f0f0);
position: relative;
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
transform: translateY(-100px);
transition: transform 0.5s;
}
.closeBtn {
position: relative;
top: 25px;
margin: 0 0 0 auto;
right: -25px;
border-radius: 50%;
background-color: #fff;
font-size: 24px;
font-weight: bold;
color: $blue-dark;
height: 50px;
width: 50px;
display: flex;
justify-content: center;
align-items: center;
cursor: pointer;
-webkit-box-shadow: 0 0 27px -10px rgba(0, 0, 0, 0.95);
-moz-box-shadow: 0 0 27px -10px rgba(0, 0, 0, 0.95);
box-shadow: 0 0 27px -10px rgba(0, 0, 0, 0.95);
transition: box-shadow 0.2s ease;
}
.closeLine {
position: absolute;
left: 0;
top: 0;
right: 0;
bottom: 0;
margin: auto;
background-color: #072742;
height: 4px;
width: 50%;
}
#closeLineOne {
transform: rotate(45deg);
}
#closeLineTwo {
transform: rotate(135deg);
}
.closeLine:hover {
-webkit-box-shadow: none;
-moz-box-shadow: none;
box-shadow: none;
}
.popupActive {
opacity: 1;
z-index: 5000;
transition: z-index 0s 0s, opacity 0.5s 0s;
}
.popupModal {
transform: translateY(0);
}
.metalModal {
height: 80%;
background: transparent;
}
.metalPopup {
display: flex;
flex-direction: column;
height: 100%;
max-width: 100%;
position: relative;
}
.metalImg {
max-width: 100%;
object-fit: cover;
max-height: calc(100% - 130px);
}
.metalName {
width: 100%;
height: 70px;
display: flex;
justify-content: center;
align-items: center;
font-weight: bold;
color: white;
font-size: 24px;
background-color: rgba(0, 0, 0, 0.75);
}
<div id="popup" class="popupActive">
<div class="popupModal metalModal">
<div class="metalPopup">
<div class="closeBtn">
<span id="closeLineOne" class="closeLine"></span>
<span id="closeLineTwo" class="closeLine"></span>
</div>
<img src="https://i.imgur.com/BeWSEDB.jpg" class="metalImg" />
<div class="metalName">
Metal name
</div>
</div>
</div>
</div>
评论
1赞
PaulProgrammer
4/15/2021
正如他们所说,给猫剥皮的方法不止一种。我喜欢在我的CSS中达到这种效果。object-fit: cover
1赞
Abhay Singh
4/16/2021
#4
您可以在 CSS 中使用纵横比来保持视频的特定比例。
video {
width: 90%;
aspect-ratio: 16/9 ; // due to this video will maintain aspect ratio of 16/9
}
几乎所有现代浏览器都支持这一点,这将使您编写更少的代码。
评论
1赞
HenrijsS
4/16/2021
纵横比很好,但它仅适用于具有特定纵横比的静态图像。就我而言,有 50-60 张图像,它们的大小都完全不同。
评论
width
height
auto
%