ackbar-sandbox.css

:root {
    --color-bg: rgb(240, 240, 240);
    --color-text: #444445;
    --color-white: #ffffff;

    --card-radius: .25rem;
    --card-shadow: 2px 2px 8px rgba(100, 100, 100, .1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto', sans-serif;
    font-weight: 300;
    color: var(--color-text);
    -webkit-font-smoothing: antialiased;
}

.container {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg);
    min-height: 100vh;
    width: 100%;
}

.card {
    background-color: var(--color-white);
    border-radius: var(--card-radius);
    padding: 1rem;
    box-shadow: var(--card-shadow);
}

.logo {
    width: 80px;
    height: auto;
    display: block;
    margin: 0 auto 1rem;
}

.title {
    color: var(--color-text);
    font-size: 1.5rem;
    margin-bottom: .5rem;
    font-weight: 500;
    text-align: center;
}

.form {
    display: grid;
    grid-template-columns: 1fr;
    grid-gap: 0 1rem;
}

@media screen and (min-width: 640px) {
    .form {
        grid-template-columns: 1fr 1fr;
    }
}

.form-group--100 {
    grid-column: 1 / -1;
}

.button {
    margin: 1rem auto 0;
}