f1vis/css/main.css

body {
  padding-top: 5rem;
}

.content-box {
  padding: 3rem 1.5rem;
  text-align: center;
}

.chart-box {
  border: 1px solid grey;
}

/* This container will allow scaling svg, so we don't need to care about it in d3.js */
.svg-container {
  display: inline-block;
  position: relative;
  width: 100%;
  padding-bottom: 100%; /* aspect ratio */
  vertical-align: top;
  overflow: hidden;
}

.svg-content-responsive {
  display: inline-block;
  position: absolute;
  top: 0; /* not 10px, but 0 instead */
  left: 0;
}