Merge remote-tracking branch 'origin/dev' into dev

luliqiang

2020-08-27 c49b95fc3576f9a5dad5bcaa6874157d5091f6e0

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.treeTable-empty {
    width: 20px;
    display: inline-block;
}
 
.treeTable-icon {
    cursor: pointer;
}
 
.treeTable-icon .layui-icon-triangle-d:before {
    content: "\e623";
}
 
.treeTable-icon.open .layui-icon-triangle-d:before {
    content: "\e625";
    background-color: transparent;
}