Backlog style sheet

styles.css

html, body {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  -webkit-box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  background-color: #D9D9D9;
  color: #2C3E50;
  font-family: Roboto, sans-serif;
  font-size: 1em;
  line-height: 1.5;
}

.sections-container {
  display: flex;
  flex-direction: row;
}

section.backlog,
section.current,
section.done {
  min-width: 220px;
  flex-grow: 1;
}

section h2 {
  text-align: center;
  line-height: 2em;
  font-weight: lighter;
}

section ol {
  list-style-type: none;
  margin: 0;
  padding: 8px;
  background: #F2F2F2;
  box-shadow: 0px 0px 1px 0px rgba(0,0,0,0.24), 0px 1px 2px 0px rgba(0,0,0,0.12);
  border-radius: 3px;
  margin: 0 8px;
}

section li a {
  font-size: 18px;
  font-weight: lighter;
  color: #2C3E50;
  line-height: 21px;
  text-decoration: none;
}

section li.card {
  padding: 8px;
  background: white;
  margin-bottom: 8px;
  border-radius: 2px;
  box-shadow: 0px 0px 1px 0px rgba(0,0,0,0.24), 0px 1px 2px 0px rgba(0,0,0,0.12);
}