我有一个显示的加载div,我希望文本位于<h1>
下面的<img>
,我可以将它在水平方向中间对齐,但我无法将其对齐<img>
以下是我的HTML
<div id="loading">
<img id="loading-image" src="http://downgraf.com/wp-content/uploads/2014/09/01-progress.gif" alt="Loading..." />
<h1 id="loading_text">Loading...</h1>
</div>
我的CSS
#loading {
width: 100%;
height: 100%;
top: 0px;
left: 0px;
position: fixed;
display: block;
z-index: 99;
background: rgba(255, 255, 255, 0.5);
}
#loading-image {
position: absolute;
margin: auto;
top: 0;
left: 0;
right: 0;
bottom: 0;
z-index: 100;
width:10%
}
#loading_text {
color:black;
text-align:center;
z-index: 101;
vertical-align:middle
}
我在这里添加了一个小提琴:http://jsfiddle.net/myh5f13q/
那么如何让<h1>
水平居中并位于<img>
?
由于
答案 0 :(得分:2)
删除所有定位并按此方式:
#loading {
display: block;
z-index: 99;
background: rgba(255, 255, 255, 0.5);
position: fixed;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
}
#loading-image {
width: 10%;
display: block;
margin: auto;
}
#loading_text {
color: black;
text-align: center;
z-index: 101;
vertical-align: middle
}
<div id="loading">
<img id="loading-image" src="http://downgraf.com/wp-content/uploads/2014/09/01-progress.gif" alt="Loading..." />
<h1 id="loading_text">Loading...</h1>
</div>
预览强>
全屏
答案 1 :(得分:1)
我会将内容包装在另一个<div>
中并使用CSS转换并将绝对位置垂直和水平放置。
来源:https://css-tricks.com/centering-css-complete-guide/
#loading {
position: relative;
}
#loading-content {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
<div id="loading">
<div id="loading-content">
<img id="loading-image" src="http://downgraf.com/wp-content/uploads/2014/09/01-progress.gif" alt="Loading..." />
<h1 id="loading_text">Loading...</h1>
</div>
</div>
答案 2 :(得分:0)
添加另一个容器,并在#loading {
width: 100%;
height: 100%;
left: 0px;
position: fixed;
display: block;
z-index: 99;
background: rgba(255, 255, 255, 0.5);
}
#loading-container {
position: relative;
top: 50%;
transform: translateY(-50%);
}
#loading-image {
display: block;
margin: auto;
width:10%
}
#loading_text {
color:black;
text-align:center;
z-index: 101;
vertical-align:middle
}
元素中添加vertically center。
http://jsfiddle.net/mblase75/gfv08q4z/
<div id="loading">
<div id="loading-container">
<img id="loading-image" src="http://downgraf.com/wp-content/uploads/2014/09/01-progress.gif" alt="Loading..." />
<h1 id="loading_text">Loading...</h1>
</div>
</div>
@pyqtSlot()
def click_my_btn(self, sender):
button = QtGui.QPushButton(button)
button.hide()