body {
  color: MintCream;
  background-color: DarkSlateBlue;
  /* background-color: MidnightBlue; */
}
h1 {
  text-align: center;
}

.mers-code-snippet {
  text-align: left;
}

.container_left {
  margin-left: 9%;
  width: 20%;
  margin-right: 5%;
  float: left;
  display: inline-block;
}
.container_center {
  margin-left: 0.5%;
  width: 30%;
  margin-right: 0.5%;
  border-style: dotted;
  display: inline-block;
}
.container_right {
  margin-left: 5%;
  width: 20%;
  margin-right: 9%;
  float: right;
  display: inline-block;
}
.code-border {
  border-style: double;
}
.textalign-center {
  text-align: center;
}