Вы можете попробовать ниже CSS
background: #ffffff;
background: -moz-linear-gradient(top , #ffffff 0px, #dddddd 100%)
background: -webkit-linear-gradient(top, #ffffff 0%, #dddddd 100%);
background: linear-gradient(to top, #ffffff 0%, #dddddd 100%);
/*
repeat, scroll,0 0 etc are background properties which can be broken
down as
*/
background-repeat: repeat;
background-attachment: scroll;
background-position:0 0;
background-color: transparent;