Wechat solves the problem of long press selected style

user-select The attribute value

value	describe
auto	Default . If the browser allows , You can select text .
none	Prevent text selection .
text	Text can be selected by the user .
all	Click to select text , Instead of double clicking .
contain	Select the text within this element , Only support (Explorer Not tested )
inherit	Inherit this attribute of the parent element
initial	Set as the initial style attribute
revert	The default value of the element attribute defined in the style sheet . If the user defines the explicit setting in the style sheet , Then press the user-defined settings, otherwise , According to the browser's default style, set otherwise , Equivalent to unset
unset	If this attribute can be inherited , Is the inherited value , Can't be inherited (initial), Is the default value

{
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}