body {
    background-color: black;
    color: #0F0;
    font-family: Consolas, monospace;
    margin: 0;
    padding: 10px;
    overflow-y: auto;
}
<!--- terminal stuff --->
#terminal {
    max-width: 800px;
    margin: 50px auto;
    white-space: pre-wrap;
    line-height: 1.4;
}
input {
    background: none;
    border: none;
    outline: none;
    color: #0F0;
    font-family: inherit;
    font-size: inherit;
    width: 90%;
}
.prompt {
    display: inline;
}
.noscript-overlay {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: rgba(0, 0, 0, 0.85); /* Darker overlay */
	z-index: 99999;
	display: flex;
	justify-content: center;
	align-items: center;
}
<!--- ns warning --->
.noscript-warning {
	background: #8b0000; /* Darker red (was too bright) */
	color: #fff;
	text-align: center;
	padding: 25px;
	width: 90%;
	max-width: 500px;
	border-radius: 10px;
	box-shadow: 0 4px 15px rgba(0, 0, 0, 0.6);
	animation: popup-fadein 0.5s ease-in-out;
}
.noscript-warning h2 {
	font-size: 24px;
	margin-bottom: 10px;
}
@keyframes popup-fadein {
	from { opacity: 0; transform: scale(0.9); }
	to { opacity: 1; transform: scale(1); }
}