body {
    margin: 0;
    height: 100vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url('a.jpg');
    background-size: 560%;
    background-repeat: no-repeat;
    font-family: Arial, sans-serif;
}

.center-text {
    font-size: 20px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    z-index: 1;
}