.wrapper-signin {
    min-height: 100%;
    height: 100%;

    display: grid;
    place-items: center;
}

.box-signin {
    text-align: center;
    background-color: #eee;
    border: 2px solid rgba(0, 0, 0, 0.1);
    padding: 30px;
    aspect-ratio : 1 / 1;

    display: grid;
    place-items: center;
}

.wrapper-signin h1 {
    margin: 0;
    text-align: center !important;
}