CSS overwritten somewhere

body .normal-page, body .portfolio, body .blog{
background-color: #32333b;
z-index: 10;
position:relative;
padding: 32px;
padding-bottom:10px;
}

for some reason the background color of this section is unaffected regardless of what color code I put into it, the background on the main section remains white. I am wondering if perhaps another tag overwrites it with an !important fuction somewhere else? I need to change the background color, everything else is working fine and i’m otherwise happy.