Editing Module:Message box/tmbox.css

/* {{pp|small=y}} */
.tmbox {
	margin: 4px 0;
	border-collapse: collapse;
	border: 1px solid #c0c090;    /* Default "notice" gray-brown */
	background-color: #f8eaba;
	box-sizing: border-box;
}

/* For the "small=yes" option. */
.tmbox.mbox-small {
	font-size: 88%;
	line-height: 1.25em;
}

.tmbox-speedy {
	border: 2px solid #b32424;    /* Red */
	background-color: #fee7e6;    /* Pink */
}

.tmbox-delete {
	border: 2px solid #b32424;    /* Red */
}

.tmbox-content {
	border: 2px solid #f28500;    /* Orange */
}

.tmbox-style {
	border: 2px solid #fc3;       /* Yellow */
}

.tmbox-move {
	border: 2px solid #9932cc;    /* Purple */
}

.tmbox .mbox-text {
	border: none;
	/* @noflip */
	padding: 0.25em 0.9em;
	width: 100%;
}

.tmbox .mbox-image {
	border: none;
	/* @noflip */
	padding: 2px 0 2px 0.9em;
	text-align: center;
}

.tmbox .mbox-imageright {
	border: none;
	/* @noflip */
	padding: 2px 0.9em 2px 0;
	text-align: center;
}

/* An empty narrow cell */
.tmbox .mbox-empty-cell {           
	border: none;
	padding: 0;
	width: 1px;
}

/* keep synced with each other type of message box as this isn't qualified */
.mbox-invalid-type {
	text-align: center;
}

@media (min-width: 720px) {
	.tmbox {
		margin: 4px 10%;
	}
	
	.tmbox.mbox-small {
		/* @noflip */
		clear: right;
		/* @noflip */
		float: right;
		/* @noflip */
		margin: 4px 0 4px 1em;
		width: 238px;
	}
}

@media screen {
    html.skin-theme-clientpref-night .tmbox {
		background-color: #2e2505;    /* Dark brown, same hue/saturation as light */
	}
	
	html.skin-theme-clientpref-night .tmbox-speedy {
		background-color: #310402;    /* Dark red, same hue/saturation as light */
	}
}

@media screen and (prefers-color-scheme: dark) {
	html.skin-theme-clientpref-os .tmbox {
		background-color: #2e2505; /* Dark brown, same hue/saturation as light */
	}
	
	html.skin-theme-clientpref-os .tmbox-speedy {
		background-color: #310402; /* Dark red, same hue/saturation as light */
	}
}

/** T367463 */
body.skin--responsive table.tmbox img {
	max-width: none !important;
}