h1 {
    padding-bottom: 2%;
}

.preloader-background {
    position: fixed;
    min-width: 100%;
    min-height: 100%;
    background-color: grey;
    top :0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.5;
    z-index: 900;
}

.preloader-container {
    display: flex;
    position: fixed;
    min-height: 100vh;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    top :0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
}

.toast-invalid {
    background-color: red;
    color: white;
}

.toast-valid {
    background-color: green;
    color: white;
}

.invalid {
    color: red;
}