body {
    background: rgb(144, 238, 144);
}

.main-grzyb {
    margin: 0;
    width: 100%;
    height: 85vh;
}

.main-grzyb p {
    font-size: 6rem;
    text-align: center;
    position: absolute;
    top: 15%;
    left: 50%;
    transform: translateX(-50%);
}