.content-gray {
  background-color: #e8ebf0;
}
.content-color {
  background-color: #fff;
}
hr.style-1 {
    border: 0;
    height: 1px;
    background: #333;
    background-image: linear-gradient(to right, #999, #838d99, #999);
}
hr.style-2 {
    border: 0;
    height: 1px;
    background-image: linear-gradient(to right, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.75), rgba(0, 0, 0, 0));
}