how skip grey lines between table cells at a html file

The problem lies in that your background is showing through between the 'cells' of your table.

You could add a background color to your table element
<table ... style="background-color:#ffffff" ...>
or move the <tr> elements closer together by modifying their position and or removing any margin or padding that may be happening.

css:
tr {
...
padding:0px;
margin:0px;
...
}

If I were coding this from scratch, I would look to use a div, position absolute in reference to the background pic, and create the table inside of the div with cells and table background of the same color.

i solve it my self thanks a lot