.col-main {
  flex: 1;  
}  

.col-complementary {
  flex: 1;  
}

/* Responsive: */

@media only screen and (min-width: 640px) {
  .layout {
    display: flex;
  }
}

/* etc */

body {
  margin: 1.5em;
}

.container {
  max-width: 60em;
  margin-right: auto;
  margin-left: auto;
}

.col {
  padding: 1em;
  margin: 0 2px 2px 0;
  background: #f6f5f3;
}

tr{
	line-height: 1px;
}