web-html5-scripts/web-techniques/vanilla-js-smooth-scroll/style.css

@import url("https://fonts.googleapis.com/css?family=Montserrat:400,900&display=swap");
* {
  box-sizing: border-box;
}

body {
  font-family: 'Montserrat', sans-serif;
}

nav {
  position: fixed;
  right: 20px;
  top: 50%;
  -webkit-transform: translateY(-50%);
          transform: translateY(-50%);
}
nav a {
  font-size: 0px;
  line-height: 0px;
  display: block;
  width: 20px;
  height: 20px;
  background: transparent;
  border: 4px solid #FFF;
  border-radius: 50%;
  margin: 10px 0;
  -webkit-filter: drop-shadow(0 0 4px rgba(0, 0, 0, 0.5));
          filter: drop-shadow(0 0 4px rgba(0, 0, 0, 0.5));
}

section {
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFF;
  padding: 5rem;
}
section#section-1 {
  background-color: #e67e22;
}
section#section-2 {
  background-color: #2980b9;
}
section#section-3 {
  background-color: #8e44ad;
}
section#section-4 {
  color: #000;
}
section#section-5 {
  background-color: #c0392b;
}
section > div {
  width: 80%;
}

strong {
  font-size: 80px;
  text-align: center;
  display: block;
}

.hljs, code {
  font-family: 'Space Mono', monospace;
}

.hljs {
  font-size: 14px;
  padding: 0 26px;
  border-radius: 4px;
  flex: 1;
  overflow: auto;
  line-height: 1.6;
}

pre {
  margin: 1rem 0;
  display: flex;
}

.options dt {
  margin-bottom: 10px;
}
.options dd {
  line-height: 24px;
  margin-left: 0;
  border-bottom: 1px solid #000;
  margin-bottom: 20px;
}
.options dd:last-child {
  margin-bottom: 0;
  border-bottom: 0;
}
.options code {
  font-weight: bold;
  background: #f7f7f7;
  font-size: 90%;
  font-weight: normal;
  padding: 1px 5px;
  border-radius: 2px;
  color: #000;
}

@media (max-width: 840px) {
  strong {
    font-size: 40px;
  }

  section {
    padding: 2rem;
  }
}