body {
    width: 100dvw;
    height: 100dvh;
    margin: 0;
    background: var(--color-main);
    overflow: hidden;
}

.sign {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.app {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}