:root {
    --borderWidth: 10px;
    --height: 100px;
    --borderColor: #3498db;
}

body {
    font-family: Montserrat;
}

.auth {
    display: flex;
    flex-direction: column;
    height: 80vh;
    align-items: center;
    justify-content: center;
}

.loader {
    border: var(--borderWidth) solid #f3f3f3; /* Light grey */
    border-top: var(--borderWidth) solid var(--borderColor); /* Blue */
    border-radius: 50%;
    width: var(--height);
    height: var(--height);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.check {
    display: inline-block;
    transform: rotate(45deg);
    height: var(--height);
    width: calc(var(--height) / 2);
    border-bottom: var(--borderWidth) solid var(--borderColor);
    border-right: var(--borderWidth) solid var(--borderColor);
}