Fastadmin controls the length of fields in the table

Fastadmin In the list display , If something like some fields, such as introduction or remarks , The content is too long , The whole display is a little unfriendly , Here is the limit length , Give me one width( Percentage or ps Will do ), Characters too long display …, Put the mouse on it to display all the contents .

{
    field: 'des', title: __('Des'), operate:false,cellStyle:function (value,row,index,field) {
    
        return {
    
            css: {
    
                "min-width": "150px",
                "white-space": "nowrap",
                "text-overflow": "ellipsis",
                "overflow": "hidden",
                "max-width":"300px"
            }
        };
    },formatter:function (value,row,index,field) {
    
        var span=document.createElement('span');
        span.setAttribute('title',value);
        span.innerHTML = value;
        return span.outerHTML;
    }},```