@keyframes to_opacity1{
    to {
        opacity: 1;
    }
}
img.lenni {
    position: fixed;
    left: -40px;
    bottom: 20px;
    height: 50%;
    opacity: 0;
    z-index: -1;
    animation: to_opacity1 5s ease-in 10s forwards;
}
form {
    background: rgba(240, 240, 240, 0.5);
    padding: 2rem;
    border-radius: 2rem;
}