Gradient 1
.gradient-1 {
background: linear-gradient(steelblue, transparent 90%), url('https://flames.hu/wp-content/uploads/2013/09/desk.jpg') no-repeat center;
background-size: cover; height: 500px;
}
Gradient 2
.gradient-2 {
background: linear-gradient(steelblue, transparent 90%), linear-gradient(0deg, white, transparent ), url('https://flames.hu/wp-content/uploads/2013/09/desk.jpg') no-repeat center;
background-size: cover;
height: 500px;
}