.circle-background {
    position: relative;
    z-index: 1;
}

.circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    z-index: 0;
}

.circle1 {
    width: 300px;
    height: 300px;
    top: -100px;
    left: -100px;
    background-color: #ff8400;
}

.circle2 {
    width: 200px;
    height: 200px;
    bottom: -50px;
    right: 50px;
    background-color: #0d6efd;
}

.circle3 {
    width: 100px;
    height: 100px;
    top: 30%;
    left: 60%;
    background-color: #198754;
}