html {
  font-size: 17px;
}

body {
  margin: 0;
  background: #d9d9d9;
  color: #111;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.canvas {
  box-sizing: border-box;
  width: calc(100% - 2rem);
  margin: 2% auto;
  min-height: 10rem;
  max-width: 80rem;
}

header {
  margin-bottom: 1rem;
}

.title {
  padding: 1.5rem 0 0.5rem;
}

h1,
h2,
h3,
h4 {
  margin-top: 0;
}

h1 {
  margin: 0;
  font-size: clamp(2.3rem, 4vw, 2rem);
  line-height: 1;
  letter-spacing: -0.1em;
}

h3 {
  margin: 0.5rem 0 0;
  font-size: 1rem;
  font-weight: 400;
}

h4 {
  margin: 0.5rem 0 0;
  font-size: 1rem;
  font-weight: 400;
}


.column,
.column-right {
  box-sizing: border-box;
}

main {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2%;
  align-items: start;
}

.piece,
.piece-bottom {
  display: block;
  margin: 0 0 2rem;
  padding: 0 0 1.2rem;
  border-bottom: 1px solid #000;
}

.piece:last-child,
.piece-bottom:last-child {
  border-bottom: none;
}

.piece h3,
.piece-bottom h3 {
  margin-bottom: 0.5rem;
  font-size: 1.15rem;
  font-weight: 700;
}

.piece p,
.piece-bottom p {
  margin: 0 0 0.8rem;
  line-height: 1.45;
}

.responsive {
  display: block;
  width: 100%;
  height: auto;
  cursor: pointer;
}

img.responsive {
  max-width: 100%;
}

.container-iframe {
  position: relative;
  width: 100%;
  height: 420px;
  max-width: 100%;
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.5);
  background: #eee;
}

.responsive-iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

p,
a,
li,
span,
button,
input,
textarea,
select {
  font-family: inherit;
}

a {
  color: #1b1b1b;
  text-decoration: underline;
}

a:hover {
  color: #5a5a5a;
}

audio {
  width: 100%;
  max-width: 100%;
}

@media screen and (max-width: 900px) {
  main {
    grid-template-columns: 1fr;
    gap: 0;
  }

}