my.css

@import url(https://use.fontawesome.com/releases/v5.0.2/css/all.css);

a, a > code {
  color: rgb(70, 130, 180);
  text-decoration: none;
}

/* Two-column layout */
.left-col-50 {
  width: 50%;
  float: left;
}

.right-col-50 {
  width: 50%;
  float: right;
}

.left-col-25 {
  width:25%;
  float: left;
}

.right-col-25 {
  width: 25%;
  float: right;
}

.left-col-75 {
  width:75%;
  float: left;
}

.right-col-75 {
  width: 75%;
  float: right;
}

.left-col-30 {
  width: 30%;
  float: left;
}

.right-col-30 {
  width: 30%;
  float: right;
}

.left-col-70 {
  width: 70%;
  float: left;
}

.right-col-70 {
  width: 70%;
  float: right;
}

.left-col-40 {
  width: 40%;
  float: left;
}

.right-col-40 {
  width: 40%;
  float: right;
}

.left-col-60 {
  width: 60%;
  float: left;
}

.right-col-60 {
  width: 60%;
  float: right;
}


/* One-column layout */
.left-col-100 {
  width: 100%;
  float: left;
}