#content-main {background: none;}
#content-main::-webkit-scrollbar {width: 15px;background-color: #000;}
#content-main::-webkit-scrollbar-track {background-color: #000;}
#content-main::-webkit-scrollbar-thumb {background-color: #000;} 
#content-main::-webkit-scrollbar-button {background-color: #000;} 
#content-main::-webkit-scrollbar-corner {background-color: #000;} 
body{ overflow-y:hidden;}