/* For div.box elements positioned on the slide */
div.box {position: absolute; margin: 0; width: auto}
div.box {top: 4em; left: 4%; max-width: 40%; box-sizing: border-box;
  -moz-box-sizing: border-box; -webkit-box-sizing: border-box}
.box + .box {top: 5em; left: 45%; max-width: 50%}
.box + .box + .box {top: 11em; left: 10%; max-width: 38%}
.box + .box + .box + .box {top: 12em; left: 50%; max-width: 46%}