Zoom in and distortation

Hi All,

I am using sapui5 table which has multiLevel headers. Things work fine until i zoom in to 50% , 33% and to 25%

Each of the coloumn has 120px width and below is the css that adust the positionof the outline. Total there are 4 quarters.

.tableHeading{
width: 480px !important;
/*width: 3.1% !important;*/
}

appriciate any help on this.