how to get rid of the gray color of sidebar and keep it white?

Hi dcsreddy. You need to remove the background image for the active sidebar, and also change the background of the main content area below it. Give this CSS a try:

/* change sidebar area to white */
.sidebar.s1, .col-2cl .main-inner {
  background-image: none;
  background-color: #fff;
}

The “.col-2cl” class means 2 column layout, content area on the left. If you change your page layout you’ll need to adjust that class in the CSS.

I have only one column as you can see in my site. Please give CSS specific to my site.

Worked like a charm. Thanks.