:root {
  --signal-green: rgb(65, 126, 87);
}

body {
    margin: 0;
}

header {
    background-color: white;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.inverted {
    color: white;
    background-color: var(--signal-green); 
}

a.custom {
    color: white;
    text-decoration: none;
}

a.custom::before {
    content: "▶ ";
}

h2 {
    color: var(--signal-green);
}

h2::before {
    content: "● ";
}

ul {
    list-style-type: "◆ ";
}

li {
    padding: 0.5em;
}

.columns {
    display:block;
}
.columns > * {
    padding: 1em;
}

@media (min-width:768px) {
    .columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    }
}