styles.css

html, body {
	margin: 0;
	padding: 0;

	font-family: Helvetica, Verdana, Arial, sans-serif;
}
body {
	padding: 3em;
	background-color: #eee;
	color: #333;

	--color-action: #4285f4;
	--color-disabled: #999;
	--color-subdued: #eee;
}

[hidden] {
	display: none !important;
}
hr {
	display: block;
	height: 1px;
	margin: 0.25em 0;
	border: none;
	background: transparent;
}
select {
	padding: 0.2em;
	border-color: var(--color-action);
	border-radius: 0.2em;
	font-size: 1.25em;
}
select[disabled] {
	border-color: var(--color-disabled);
	color: var(--color-disabled);
}

.card {
	display: inline-block;

	margin-bottom: 1em;
	padding: 1em;

	border: 1px solid #ddd;
	border-radius: 0.3em;
	background-color: #fff;
	box-shadow: 0 0 0.5em 0 #ddd;
}

.u-inlineBlock {
	display: inline-block;
}
.u-flex {
	display: flex;
}
.u-marginLeft {
	margin-left:  0.5em;
}
.u--uppercase {
	text-transform: uppercase;
}

#inputGapiClientId {
	display: block;
	width: 100%;
	margin-bottom: 0.1em;
	padding: 0.2em 0.5em;
	border: 1px solid #ddd;
	background-color: transparent;
	color: var(--color-disabled);
}
.signin-identity {
	display: block;
	margin: 0.5em 0;

	color: var(--color-action);
	text-align: center;
	font-weight: bold;
}

button {
	cursor: pointer;

    border: 1px solid var(--color-action);
    border-radius: 0.2em;
    background-color: var(--color-action);
    box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.25);

    color: #fff;
    font-size: 1.25em;
}
button[disabled] {
	border-color: var(--color-disabled);
	background-color: var(--color-disabled);
	box-shadow: none
}
button.button--subdued {
	background-color: var(--color-subdued);
	color: var(--color-action);
}

.commands * {
	outline: none;
}
.commands button {
	margin-left: 0.25em;
}
.commands-progress {
	display: block;
	margin-top: 0.25em;
	--mdc-theme-primary: var(--color-action);
}

.material-symbols-outlined {
	font-variation-settings:
	'FILL' 0,
	'wght' 400,
	'GRAD' 0,
	'opsz' 48
}