:root {
  --color-bg: white;
  --color-text-main: #000000;
  --color-text-header: #2800ff;
  --color-primary: #edf2fa;
  --wrapper-height: 87vh;
  --font-family: "HK Grotesk";
}

* {
  box-sizing: border-box;
}
[hidden] {
  display: none !important;
}

/* Import fonts */
@font-face {
  font-family: HK Grotesk;
  src: url("https://cdn.glitch.me/605e2a51-d45f-4d87-a285-9410ad350515%2FHKGrotesk-Regular.otf?v=1603136326027")
    format("opentype");
}
@font-face {
  font-family: HK Grotesk;
  font-weight: bold;
  src: url("https://cdn.glitch.me/605e2a51-d45f-4d87-a285-9410ad350515%2FHKGrotesk-Bold.otf?v=1603136323437")
    format("opentype");
}

body {
  font-family: HK Grotesk;
  background-color: var(--color-bg);
  overflow: hidden;
  margin: 0;
  padding: 0;
  touch-action: manipulation;
}

/* Page structure */
.wrapper {
  width: 100%;
  max-width: 500px;
  padding: 20px;
  margin: 0 auto;

  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  overflow: hidden;
}
.content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

button {
  font-family: inherit;
  font-size: 100%;
  background: #ffffff;
  border: 1px solid #000000;
  box-sizing: border-box;
  border-radius: 4px;
  padding: 0.5rem 1rem;
  transition: 500ms;
  margin: 10px;
  cursor: pointer;
  color: inherit;
}

button.active {
  background: var(--color-text-header);
  color: white;
}

h2 {
  color: var(--color-text-header);
  text-align: center;
}

#staff {
  text-align: center;
}

svg {
  width: 150px;
  height: 110px;
}

#container {
  position: relative;
}
#strings {
  position: absolute;
  top: 0;
  height: 100%;
  width: 100%;
  z-index: -1;
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  
  border-bottom: 6px solid black;
}
#strings > div {
  height: 100%;
  width: 2px;
  background: black;
}
#cello {
  display: grid;
  grid-template-columns: repeat(4, 50px);
  grid-template-rows: repeat(5, 1fr);
  grid-column-gap: 8px;
  grid-row-gap: 8px;
  margin: 0 auto;
  transform: rotate(180deg);
  padding-top: 20px;
  padding-bottom: 20px;
}

#cello > div {
  border-radius: 50%;
  background: var(--color-primary);
  height: 50px;
  width: 50px;
  text-align: center;
  line-height: 50px;
  transform: rotate(180deg);
}

#cello > div.open {
  background: white;
  height: 30px;
  width: 30px;
  line-height: 30px;
  margin: 10px;
}

#cello > div.active {
  background: var(--color-text-header);
  color: white;
}
/* #cello > div.open.active {
  border-color: var(--color-text-header);
  background: transparent;
  color: black;
} */

.horizontal {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
}

@media only screen and (max-width: 390px) {
  .wrapper {
    padding: 0
  }
}