純CSS實現(xiàn)設置半個字符的樣式

發(fā)布時間：2014-07-03 10:35:38 作者：佚名

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這篇文章主要介紹了純CSS實現(xiàn)設置半個字符的樣式,分別實現(xiàn)了水平和垂直一半、水平和垂直三分之一等效果,需要的朋友可以參考下

在stackoverflow上看到的問題怎么給半個字符設置樣式，很多大神給出了答案。我就等就來學習圍觀吧。
一：基本解決方案：
html:

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代碼如下:

X
Y
Z
A

css:

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代碼如下:

.halfStyle {
position:relative;
display:inline-block;
font-size:80px; /* or any font size will work */
color: black; /* or transparent, any color */
overflow:hidden;
white-space: pre; /* to preserve the spaces from collapsing */
}
.halfStyle:before {
display:block;
z-index:1;
position:absolute;
top:0;
left:0;
width: 50%;
content: attr(data-content); /* dynamic content for the pseudo element */
overflow:hidden;
color: #f00;
}

效果如圖：

這種方法用于任何動態(tài)文本或單個字符，并且都是自動適用的。所有你需要做的就是在目標文本上添加一個class，剩下的就解決了。

同時，保留了原文的可訪問性，可以被盲人或視障人士使用的屏幕閱讀器識別。

單個字符的實現(xiàn)：

純CSS。所有你需要做的就是把.halfStyle class用在每個你想要渲染一半樣式字符的元素上。

對于每個包含字符的span元素，你可以添加一個data屬性，比如data-content=”X”，并且在偽元素上使用content:attr(data-content)；這樣，.halfStyle:before class將會是動態(tài)的，你不需要為每個實例進行硬編碼

以下其它效果自行測試了。。。

二：左右開弓，兩邊都設置樣式
更改CSS:

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代碼如下:

.halfStyle {
position:relative;
display:inline-block;
font-size:80px; /* or any font size will work */
color: transparent; /* hide the base character */
overflow:hidden;
white-space: pre; /* to preserve the spaces from collapsing */
}
.halfStyle:before { /* creates the left part */
display:block;
z-index:1;
position:absolute;
top:0;
width: 50%;
content: attr(data-content); /* dynamic content for the pseudo element */
overflow:hidden;
pointer-events: none; /* so the base char is selectable by mouse */
color: #f00; /* for demo purposes */
text-shadow: 2px -2px 0px #af0; /* for demo purposes */
}
.halfStyle:after { /* creates the right part */
display:block;
direction: rtl; /* very important, will make the width to start from right */
position:absolute;
z-index:2;
top:0;
left:50%;
width: 50%;
content: attr(data-content); /* dynamic content for the pseudo element */
overflow:hidden;
pointer-events: none; /* so the base char is selectable by mouse */
color: #000; /* for demo purposes */
text-shadow: 2px 2px 0px #0af; /* for demo purposes */
}

三：設置水平一半的樣式
CSS:

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代碼如下:

.halfStyle {
position:relative;
display:inline-block;
font-size:80px; /* or any font size will work */
color: transparent; /* hide the base character */
overflow:hidden;
white-space: pre; /* to preserve the spaces from collapsing */
}
.halfStyle:before { /* creates the top part */
display:block;
z-index:2;
position:absolute;
top:0;
height: 50%;
content: attr(data-content); /* dynamic content for the pseudo element */
overflow:hidden;
pointer-events: none; /* so the base char is selectable by mouse */
color: #f00; /* for demo purposes */
text-shadow: 2px -2px 0px #af0; /* for demo purposes */
}
.halfStyle:after { /* creates the bottom part */
display:block;
position:absolute;
z-index:1;
top:0;
height: 100%;
content: attr(data-content); /* dynamic content for the pseudo element */
overflow:hidden;
pointer-events: none; /* so the base char is selectable by mouse */
color: #000; /* for demo purposes */
text-shadow: 2px 2px 0px #0af; /* for demo purposes */
}

四：水平三分之一的樣式
css:

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代碼如下:

.halfStyle { /* base char and also the bottom 1/3 */
position:relative;
display:inline-block;
font-size:80px; /* or any font size will work */
color: transparent;
overflow:hidden;
white-space: pre; /* to preserve the spaces from collapsing */
color: #f0f;
text-shadow: 2px 2px 0px #0af; /* for demo purposes */
}
.halfStyle:before { /* creates the top 1/3 */
display:block;
z-index:2;
position:absolute;
top:0;
height: 33.33%;
content: attr(data-content); /* dynamic content for the pseudo element */
overflow:hidden;
pointer-events: none; /* so the base char is selectable by mouse */
color: #f00; /* for demo purposes */
text-shadow: 2px -2px 0px #fa0; /* for demo purposes */
}
.halfStyle:after { /* creates the middle 1/3 */
display:block;
position:absolute;
z-index:1;
top:0;
height: 66.66%;
content: attr(data-content); /* dynamic content for the pseudo element */
overflow:hidden;
pointer-events: none; /* so the base char is selectable by mouse */
color: #000; /* for demo purposes */
text-shadow: 2px 2px 0px #af0; /* for demo purposes */
}

五：垂直三分之的樣式
css:

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代碼如下:

.halfStyle { /* base char and also the right 1/3 */
position:relative;
display:inline-block;
font-size:80px; /* or any font size will work */
color: transparent; /* hide the base character */
overflow:hidden;
white-space: pre; /* to preserve the spaces from collapsing */
color: #f0f; /* for demo purposes */
text-shadow: 2px 2px 0px #0af; /* for demo purposes */
}
.halfStyle:before { /* creates the left 1/3 */
display:block;
z-index:2;
position:absolute;
top:0;
width: 33.33%;
content: attr(data-content); /* dynamic content for the pseudo element */
overflow:hidden;
pointer-events: none; /* so the base char is selectable by mouse */
color: #f00; /* for demo purposes */
text-shadow: 2px -2px 0px #af0; /* for demo purposes */
}
.halfStyle:after { /* creates the middle 1/3 */
display:block;
z-index:1;
position:absolute;
top:0;
width: 66.66%;
content: attr(data-content); /* dynamic content for the pseudo element */
overflow:hidden;
pointer-events: none; /* so the base char is selectable by mouse */
color: #000; /* for demo purposes */
text-shadow: 2px 2px 0px #af0; /* for demo purposes */
}