body
{
 background-color: #ffffff;
 font-family: Arial;
 zoom: 100%;
 overflow: auto;
 padding: 0px;
}

#main_div
{
    padding: 0px;   

}

.process_line_background
{
  transition-property:     opacity;
  transition-duration: 1s;


  position: absolute; 
  width: 100%; 
  height: 100vh; 
  z-index: 990; 
  left: 0px; 
  top: 0px; 
  display: grid; 
  align-items: center; 
  background-color: #ffffff;
  padding: 0px;


}