ADJUST TABLE ROW WIDTH with 100 Percent TABLE WIDTH Style

I have a table width set 100% and I have a td custom开发者_开发技巧 class named bordered.

source code: `

table {
  border-collapse: collapse;
  border-spacing: 0;
  width: 100%;
  border: 0px;
}

tr.bordered {
   
    border-bottom: 1px solid #000;
}

I don't want the bordered tr to be 100% width also.

I want it to be just 540px width. But when I set width under tr.bordered it doesn't reflect.