* {
    box-sizing: border-box;
}

body {
    margin: 0;
    height: 100vh;
    display: flex;
    overflow: hidden;
    align-items: center;
    flex-direction: column;
    justify-content: center;
}

.background {
    top: -20px;
    z-index: -1;
    left: -20px;
    right: -20px;
    bottom: -20px;
    filter: blur(20px);
    position: absolute;
    background: url(./background.jpg) no-repeat center center/cover;
}