/*
Chromium 43 macosx
    layout   58
    recalculate  37 ms
    paint  7.541 ms
    composite
Safari macosx
    layout   46 ms
    recalculate  25 ms
    paint  520 ms
    composite
*/
.container {
  max-width: 940px;
  margin: 2rem auto;
  font-family: Arial;
}
.ex {
  width: 100%;
  overflow: hidden;
  table-layout: fixed;
  margin-bottom: 1rem;
}
.col:nth-of-type(2n) {
  background: rgba(255,0,0,0.3);
}
.col:nth-of-type(2n + 1) {
  background: rgba(255,0,0,0.15);
}
.col {
  float: left;
  line-height: 3rem;
  text-align: center;
  padding: 0 10px;
  box-sizing: border-box;
}
.ex-0 .col {
  width: 10%;
}
.ex-1 .col {
  width: 16.666666666666668%;
}
.ex-2 .col {
  width: 25%;
}
.ex-3 .col {
  width: 50%;
}
.ex-4 .col-0 {
  width: 67%;
}
.ex-4 .col-1 {
  width: 33%;
}
.ex-5 .col-0 {
  width: 80%;
}
.ex-5 .col-1 {
  width: 20%;
}
.ex-6 .col-0 {
  width: 90%;
}
.ex-6 .col-1 {
  width: 10%;
}
.ex-7 .col-0 {
  width: 20%;
}
.ex-7 .col-1 {
  width: 80%;
}