CSS
#teste {
background: -webkit-linear-gradient(left, rgba(0, 0, 0, 0.03) 0%, rgba(0, 0, 0, 0.21) 13%, rgba(0, 0, 0, 0.61) 20%, rgba(0, 0, 0, 0.15) 39%, rgba(0, 0, 0, 0.04) 96%);
background: -o-linear-gradient(left, rgba(0, 0, 0, 0.03) 0%, rgba(0, 0, 0, 0.21) 13%, rgba(0, 0, 0, 0.61) 20%, rgba(0, 0, 0, 0.15) 39%, rgba(0, 0, 0, 0.04) 96%);
background: -ms-linear-gradient(left, rgba(0, 0, 0, 0.03) 0%, rgba(0, 0, 0, 0.21) 13%, rgba(0, 0, 0, 0.61) 20%, rgba(0, 0, 0, 0.15) 39%, rgba(0, 0, 0, 0.04) 96%);
background: -moz-linear-gradient(left, rgba(0, 0, 0, 0.03) 0%, rgba(0, 0, 0, 0.21) 13%, rgba(0, 0, 0, 0.61) 20%, rgba(0, 0, 0, 0.15) 39%, rgba(0, 0, 0, 0.04) 96%);
background: linear-gradient(to right, rgba(0, 0, 0, 0.03) 0%, rgba(0, 0, 0, 0.21) 13%, rgba(0, 0, 0, 0.61) 20%, rgba(0, 0, 0, 0.15) 39%, rgba(0, 0, 0, 0.04) 96%);
}