style.css

body {
    display: flex;
    flex-flow: column nowrap;
    justify-content: center;
    align-items: center;
    height: 100vh;
    width: 100vw;
	padding: 0;
    margin: 0;
	font-family: -apple-system, BlinkMacSystemFont, "Arial", sans-serif;
    background-color: rgb(11,15,25);
    color: white
}

h1 {
	font-size: 16px;
	margin-top: 0;
}

p {
	font-size: 15px;
	margin-bottom: 10px;
	margin-top: 5px;
}

strong, em, a {
    color: #16c8ce;
}

.card {
	max-width: 640px;
	margin: 0 auto;
	padding: 16px;
	border: 1px solid rgb(107, 114, 128);
	border-radius: 16px;
	background-color: rgb(16, 22, 35);
}

.card p:last-child {
	margin-bottom: 0;
}

.card img {
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
}

#logo, #links {
    display: flex;
    flex-flow: row wrap;
    justify-content: center;
}

#links {
    gap: 1em;
    margin: 1em;
}

#links img {
    height: 20px;
}

#graphs {
    display: flex;
    flex-flow: column nowrap;
    justify-content: center;
    align-items: center;
    gap: 1em;
}

label {
    display: block;
}

#graphs div {
    position: relative;
}

#graphs label {
    position: absolute;
    right: 0;
    top: 0;
    max-width: 120px;
    text-transform: uppercase;
    font-family: monospace;
    text-align: right;
    padding: 0 4px;
    line-height: 20px;
    background-image: linear-gradient(to top, rgba(255,255,255,0.1), rgba(255,255,255,0.0));
    border: 1px solid rgba(255,255,255,0.1);
    border-top: none;
    border-right: none;
}

#graphs .legend {
    display: flex;
    flex-flow: row wrap;
    justify-content: flex-end;
    gap: 1px 5px;
    text-transform: uppercase;
    font-family: monospace;
    font-size: 10px;
    line-height: 11px;
}

canvas.graph {
    border: 1px solid rgba(255,255,255,0.1);
    border-bottom: none;
    background-image:
        repeating-linear-gradient(to top, rgba(255,255,255,0.05), rgba(255,255,255,0.05) 1px, transparent 1px, transparent 10px),
        linear-gradient(to top, rgba(255,255,255,0.1), rgba(255,255,255,0.0));
}

#recording {
    margin-top: 1em;
    position: relative;
    display: block;
    height: 100px;
    line-height: 100px;
    text-align: center;
    font-size: 11px;
    background-image: linear-gradient(to top, rgba(255,255,255,0.1), rgba(255,255,255,0.0));
	border: 1px solid rgba(255,255,255,0.1);
    border-bottom-left-radius: 10px;
    border-bottom-right-radius: 10px;
}

#recording #audio {
    display: flex;
    flex-flow: row nowrap;
    align-items: center;
    justify-content: center;
    height: 100%;
}

#recording label {
    position: absolute;
    right: 0;
    top: 0;
    max-width: 120px;
    text-transform: uppercase;
    font-family: monospace;
    font-size: 12px;
    text-align: right;
    padding: 0 4px;
    line-height: 20px;
    background-image: linear-gradient(to top, rgba(255,255,255,0.1), rgba(255,255,255,0.0));
    border: 1px solid rgba(255,255,255,0.1);
    border-top: none;
    border-right: none;
}