Detailed explanation of the usage of CSS writing-mode text layout attribute

Syntax:

writing-mode : lr-tb | tb-rl

/* 关键字值 */  
writing-mode: horizontal-tb;    /* 默认值 */  
writing-mode: vertical-rl;   
writing-mode: vertical-lr;  
/* 全局值-关键字inherit IE8+，initial和unset IE13才支持 */  
writing-mode: inherit;   
writing-mode: initial;   
writing-mode: unset;

lr-tb: Default value. The content in object flows from left to right in the horizontal direction, with the next line below the previous line. All glyphs are vertical and upward. This layout is used in Roman languages ​​

tb-rl: top-bottom, right-left. Content in an object flows vertically from top to bottom and from right to left. The next vertical row is to the left of the previous vertical row. Full-width characters are oriented vertically upward, and half-width characters such as Latin letters or katakana are rotated 90 degrees clockwise. This layout is commonly used in East Asian languages ​​

Description:

Sets or retrieves the inherent writing direction of the object's content block. Western languages ​​do use left-right, top-bottom writing. But Asian languages ​​often have up-down, right-left writing styles.

When the value of this attribute changes, the effects of the text-align attribute and the vertical-align attribute will also change.

Style sheet attributes are not inheritable for the following elements:

BUTTON CAPTION INPUT INPUT type=button INPUT type=file INPUT type=password INPUT type=reset INPUT type=submit INPUT type=text ISINDEX OPTION TEXTAREA

The effect of this attribute will not be cumulative. For example, if the value of this property of the parent object is set to tb-rl, setting the value of this property of the child object to tb-rl will not cause the rotation of the child object.

If the object's writing-mode property is set differently from its parent object, it will get its own layout. The width of such an object is determined by using the height of its first laid-out parent.

When you use objects with different writing-mode property values, specifying certain sizes for each object gives you better overall control over their layout.

This property is read-only for the currentStyle object. For other objects can be read and written.

The corresponding script feature is writingMode.

Example of vertical layout of text:

.verticle-mode {   
    writing-mode: tb-rl;   
    -webkit-writing-mode: vertical-rl;         
    writing-mode: vertical-rl;   
}   
/* IE7比较弱，需要做点额外的动作 */  
.verticle-mode {   
    *width: 120px;   
}   
.verticle-mode h4,   
.verticle-mode p {   
    *display: inline;   
    *writing-mode: tb-rl;   
}   
.verticle-mode h4 {   
    *float:rightright;   
}

html is as follows:

<div class="verticle-mode">  
    <h4 id="咏柳">咏柳</h4>  
    <p>碧玉妆成一树高，<br>万条垂下绿丝绦。<br>不知细叶谁裁出，<br>二月春风似剪刀。</p>  
</div>

We can see the vertical layout of ancient poetry!

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