我试图将此模态消息设为居中但总是落在左侧,我已尝试使用margin: 0 auto; float: center
或left: 0
和right: 0
但是这不起作用。
.descrizione {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
transition: opacity 400ms;
}
.descrizione .cancel {
position: absolute;
width: 100%;
height: 100%;
cursor: default;
}
.descrizione:target {
visibility: visible;
opacity: 0;
animation: animationFrames ease 1s;
animation-iteration-count: 1;
transform-origin: 50% 50%;
animation-fill-mode: forwards;
-webkit-animation: animationFrames ease 1s;
-webkit-animation-iteration-count: 1;
-webkit-transform-origin: 50% 50%;
-webkit-animation-fill-mode: forwards;
-moz-animation: animationFrames ease 1s;
-moz-animation-iteration-count: 1;
-moz-transform-origin: 50% 50%;
-moz-animation-fill-mode: forwards;
-o-animation: animationFrames ease 1s;
-o-animation-iteration-count: 1;
-o-transform-origin: 50% 50%;
-o-animation-fill-mode: forwards;
-ms-animation: animationFrames ease 1s;
-ms-animation-iteration-count: 1; -ms-transform-origin: 50% 50%;
-ms-animation-fill-mode: forwards;
}
.messaggio {
z-index: 9999;
padding: 20px;
background: #fff;
border: 1px solid #666;
width: 300px;
box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
position: relative;
}
.light .messaggio {
border-color: #aaa;
box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
}
.messaggio h2 {
margin-top: 0px;
color: #666;
text-transform: uppercase;
border-bottom: 2px solid #2767ce;
font-family: "Trebuchet MS", Tahoma, Arial, sans-serif;
}
.messaggio .chiudi {
position: absolute;
width: 20px;
height: 20px;
top: 20px;
right: 20px;
opacity: 0.8;
transition: all 200ms;
font-size: 24px;
font-weight: bold;
text-decoration: none;
color: #666;
}
.messaggio .chiudi:hover {
opacity: 1;
display: block;
}
.messaggio .testo {
max-height: 400px;
overflow: auto;
font-family: sans-serif;
font-size: 16px;
}
.messaggio p {
margin: 0 0 1em;
}
.messaggio p:last-child {
margin: 0;
}

<div class="descrizione" id="hub">
<div class="messaggio">
<h2>hub</h2>
<a class="chiudi" href="#">×</a>
<div class="testo">
<p>Questa è una breve descrizione che deve essere modificate dal propietario della pagina di mc-ita, si prega di modificarla al più presto</p>
</div>
</div>
</div>
&#13;
PS:单击按钮后会出现此消息。
答案 0 :(得分:1)
messagio{
margin: auto;
}
因为messagio只有300px并且它的容器跨越父级的宽度,所以必须使用边距来居中它。
另一种方法是使用Flexbox设置父级来弯曲和调整内容中心,或者左侧定位:50%并减去宽度的一半(150px)..但我认为保证金自动适合最佳。
希望这有帮助!
答案 1 :(得分:1)
添加:
margin:15% auto;
到.messagio
css class ...
答案 2 :(得分:1)
你可以使用flexbox轻松实现这一点,CSS中注明了修改,但基本上是:
width:100%;
&amp; height: 100%;
至html, body{}
.descrizione
设为display: flex;
并与justify-content: center;
垂直对齐,align-items: center;
段:
/* add these */
html,
body {
width: 100%;
height: 100%;
}
.descrizione {
/* position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0; */
transition: opacity 400ms;
height: 100%;
width: 100%;
/* add these */
display: flex;
align-items: center;
justify-content: center;
}
.descrizione .cancel {
position: absolute;
width: 100%;
height: 100%;
cursor: default;
}
.descrizione:target {
visibility: visible;
opacity: 0;
animation: animationFrames ease 1s;
animation-iteration-count: 1;
transform-origin: 50% 50%;
animation-fill-mode: forwards;
-webkit-animation: animationFrames ease 1s;
-webkit-animation-iteration-count: 1;
-webkit-transform-origin: 50% 50%;
-webkit-animation-fill-mode: forwards;
-moz-animation: animationFrames ease 1s;
-moz-animation-iteration-count: 1;
-moz-transform-origin: 50% 50%;
-moz-animation-fill-mode: forwards;
-o-animation: animationFrames ease 1s;
-o-animation-iteration-count: 1;
-o-transform-origin: 50% 50%;
-o-animation-fill-mode: forwards;
-ms-animation: animationFrames ease 1s;
-ms-animation-iteration-count: 1;
-ms-transform-origin: 50% 50%;
-ms-animation-fill-mode: forwards;
}
.messaggio {
z-index: 9999;
padding: 20px;
background: #fff;
border: 1px solid #666;
width: 300px;
box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
position: relative;
/* add these */
margin: 0 auto;
}
.light .messaggio {
border-color: #aaa;
box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
}
.messaggio h2 {
margin-top: 0px;
color: #666;
text-transform: uppercase;
border-bottom: 2px solid #2767ce;
font-family: "Trebuchet MS", Tahoma, Arial, sans-serif;
}
.messaggio .chiudi {
position: absolute;
width: 20px;
height: 20px;
top: 20px;
right: 20px;
opacity: 0.8;
transition: all 200ms;
font-size: 24px;
font-weight: bold;
text-decoration: none;
color: #666;
}
.messaggio .chiudi:hover {
opacity: 1;
display: block;
}
.messaggio .testo {
max-height: 400px;
overflow: auto;
font-family: sans-serif;
font-size: 16px;
}
.messaggio p {
margin: 0 0 1em;
}
.messaggio p:last-child {
margin: 0;
}
&#13;
<div class="descrizione" id="hub">
<div class="messaggio">
<h2>hub</h2>
<a class="chiudi" href="#">×</a>
<div class="testo">
<p>Questa è una breve descrizione che deve essere modificate dal propietario della pagina di mc-ita, si prega di modificarla al più presto</p>
</div>
</div>
</div>
&#13;