body {
    background-color: #2e2e2e;
}

span {
    color: white;

    .error {
        color: red;
    }
}

.content {
    position: absolute;
    left: 50%;
    top: 50%;
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    padding: 20px;

    button {
        display: block;
        margin-bottom: 5px;
    }
}

/* Source: https://cssloaders.github.io/ */
.loader {
    --color-1: #fff;
    --color-2: #522E23;
    --size: 2px;

    width: calc(48 * var(--size));
    height: calc(48 * var(--size));
    border: calc(5 * var(--size)) solid var(--color-1);
    border-bottom-color: var(--color-2);
    border-radius: 50%;
    display: inline-block;
    box-sizing: border-box;
    animation: rotation 1s linear infinite;
}

@keyframes rotation {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}