body {
  font-family: monospace;
  font-size:20px;
  line-height:1.5;
  position:relative;
  color: #fff;
  background-color:#2e4051;
}
a {
  color:#fff;
  text-decoration: underline 2px dotted white;
}
a:hover {
  text-decoration: underline 2px solid white;
}
:focus {
    border-bottom: none;
    outline: 2px dashed white;
}
.layout {
  max-width: 1000px;
  margin: 0 auto 200px;
}
.big-text-header {
  font-size: 70px;
  line-height: 1;
  text-align: center;
  display: flex;
  justify-content: center;
}
.big-text-header__text {
  font-size: 1em;
  padding: 10px;
}
.layout__left-col {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.left-nav {
  min-width: 180px;
}
.left-nav__categories {
  padding: 0;
  margin: 0;
  list-style-type: none;
}
.left-nav__category {
  margin-bottom: 16px;
}
.left-nav .category-label {
  padding-left: 16px;
}
.left-nav__list {
  font-family: monospace;
  list-style-type: none;
  padding: 0;
  margin: 0;
  font-size: 20px;
  line-height: 1;
}
.left-nav__block {
  margin: 4px 4px 12px 4px;
  background-color: #2e2f51;
  position: relative;
  border: 2px solid;
  border-color: #2e2f51;
}
.left-nav__list-link,
.left-nav__list-link:visited {
  color: #fff;
  padding: 6px;
  display: block;
}
@media screen and (min-width: 800px) {
  .layout__columns {
    display: flex;
  }
  .layout__left-col {
    align-items: start;
  }
  .left-nav {
    margin-right: 24px;
  }
}