body, html {
    margin: 0;
    overflow-x: hidden;
    overflow-y: auto;
    width: 100%;
}

.background {
    position: absolute;
    width: 100%;

    background: linear-gradient(135deg, #f5f7fa, #c3cfe2);
    z-index: -1;
}

.circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
}