Here is my page header:
<apex:page standardController="Pro_Sale__c" cache="false" standardStylesheets="true" showHeader="false" applyBodyTag="false" renderAs="pdf">

Here is the part of my style that controls borders:
        table.gridtable {
            border-collapse: collapse;
            border: 0px;

         }

        th {
            border: 1px solid #000;
            padding: 3px;
            border-collapse : collapse;
            border-spacing: 0;

         }
         
        td {
            border: 1px solid #000;
            padding: 3px;
            border-collapse : collapse;
            border-spacing: 0;
         }
        

When I render as html, it looks fine, with all borders as 1px. However, when I render as pdf, some lines are double thickness (and there is no rhyme or reason why some are and some aren't, though the double thickness seem to be around th more than td). I've tried with standardstylesheets="true" and "false" and still get the same results.

Here is my page header:
<apex:page standardController="Pro_Sale__c" cache="false" standardStylesheets="true" showHeader="false" applyBodyTag="false" renderAs="pdf">

Here is the part of my style that controls borders:
        table.gridtable {
            border-collapse: collapse;
            border: 0px;

         }

        th {
            border: 1px solid #000;
            padding: 3px;
            border-collapse : collapse;
            border-spacing: 0;

         }
         
        td {
            border: 1px solid #000;
            padding: 3px;
            border-collapse : collapse;
            border-spacing: 0;
         }
        

When I render as html, it looks fine, with all borders as 1px. However, when I render as pdf, some lines are double thickness (and there is no rhyme or reason why some are and some aren't, though the double thickness seem to be around th more than td). I've tried with standardstylesheets="true" and "false" and still get the same results.

Can anyone suggest, how ca we delete apex class from production.

please provide step-step process to delete it from prod. through Force.com Eclipse.