Introduction#

part 4 chapter 12 on contrast and color html book, see demo here

web-css-color

HTML#

the html page

<body>
    <nav class="nav-container">
      <div class="nav-container__inner">
        <a href="#" class="home-link">Ink</a>
        <ul class="top-nav">
          <li>
            <a href="#">Features</a>
          </li>
          <li>
            <a href="#">Pricing</a>
          </li>
          <li>
            <a href="#">Support</a>
          </li>
          <li class="top-nav__featured">
            <a href="#">login</a>
          </li>
        </ul>
      </te>
    </nav>
    <div class="hero">
      <div class="hero__inner">
        <h2>
          Team collaboration done right
        </h2>
        <a href="#" class="button button--cta">Get started</a>
      </div>
    </div>
    <div class="container">
      <div class="title-row">
        <div class="title">
          <h4>
            Work together, even if you're apart
          </h4>
          <p>
            Lorem ipsum dolor sit amet consectetur adipisicing elit. Nisi maiores, officiis ea beatae aut quod nihil voluptatem ab asperiores dolore nesciunt velit dicta vel iusto aspernatur consectetur magnam consequatur similique!
          </p>
          <a href="#" class="button">Read more</a>
        </div>
        <div class="title">
          <h4>
            Work together, even if you're apart
          </h4>
          <p>
            Lorem ipsum dolor sit amet consectetur adipisicing elit. Nisi maiores, officiis ea beatae aut quod nihil voluptatem ab asperiores dolore nesciunt velit dicta vel iusto aspernatur consectetur magnam consequatur similique!
          </p>
          <ul class="tag-list">
            <li>Web</li>
            <li>iOS</li>
            <li>Android</li>
            <li>Window Phone</li>
          </ul>
          <a href="#" class="button">Read more</a>
        </div>
        <div class="title">
          <h4>
            Work together, even if you're apart
          </h4>
          <p>
            Lorem ipsum dolor sit amet consectetur adipisicing elit. Nisi maiores, officiis ea beatae aut quod nihil voluptatem ab asperiores dolore nesciunt velit dicta vel iusto aspernatur consectetur magnam consequatur similique!
          </p>
          <a href="#" class="button">Read more</a>
        </div>
      </div>
    </div>
    <footer class="page-footer">
      <div class="page-footer__inner">
        Copyright &copy; 2023 entest, Inc.
      </div>
    </footer>
  </body>

Color Variables#

primary color and its variants, by using variables, we can reuse, update and maintain much easier

html {
  --brand-green: #076448;
  --dark-green: #099268;
  --medium-green: #20c997;
  --text-color: #212529;
  --gray: #868e96;
  --light-gray: #f1f3f5;
  --extra-light-gray: #f8f8fa;
  --white: #fff;
}
<nav class="nav-container">
  <div class="nav-container__inner">
    <a href="#" class="home-link">Ink</a>
    <ul class="top-nav">
      <li>
        <a href="#">Features</a>
      </li>
      <li>
        <a href="#">Pricing</a>
      </li>
      <li>
        <a href="#">Support</a>
      </li>
      <li class="top-nav__featured">
        <a href="#">login</a>
      </li>
    </ul>
  </div>
</nav>

and css

.nav-container {
  background-color: var(--medium-green);
}
.nav-container__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0.625em 0;
}
.home-link {
  color: var(--text-color);
  font-size: 1.6rem;
  font-family: Georgia, serif;
  font-weight: bold;
  text-decoration: none;
}
.top-nav {
  display: flex;
  list-style-type: none;
}
.top-nav a {
  display: block;
  padding: 0.3em 1.25em;
  color: var(--white);
  background: var(--brand-green);
  text-decoration: none;
  border-radius: 3px;
}
.top-nav a:hover {
  background-color: var(--dark-green);
}
.top-nav__featured > a {
  color: var(--brand-green);
  background-color: var(--white);
}
.top-nav__featured > a:hover {
  color: var(--medium-green);
  background-color: var(--white);
}
.top-nav > li + li {
  margin-left: 1em;
}

Hero and Background Image#

<div class="hero">
  <div class="hero__inner">
    <h2>Team collaboration done right</h2>
    <a href="#" class="button button--cta">Get started</a>
  </div>
</div>

css module following the BEM style to create sub-module and variants

.hero {
  background-image: url('https://d2cvlmmg8c0xrp.cloudfront.net/web-css/singapore.jpg');
  background-repeat: no-repeat;
  background-size: cover;
  margin-bottom: 2.5rem;
}
.hero__inner {
  max-width: 1080px;
  text-align: right;
  margin: 0 auto;
  padding: 5.5625em 12.5em 12.5em 0;
}
.hero h2 {
  font-size: 1.95rem;
  margin-top: 0;
  margin-bottom: 0.625em;
}

Container Content#

<div class="container">
  <div class="title-row">
    <div class="title">
      <h4>Work together, even if you're apart</h4>
      <p>
        Lorem ipsum dolor sit amet consectetur adipisicing elit. Nisi maiores,
        officiis ea beatae aut quod nihil voluptatem ab asperiores dolore
        nesciunt velit dicta vel iusto aspernatur consectetur magnam consequatur
        similique!
      </p>
      <a href="#" class="button">Read more</a>
    </div>
    <div class="title">
      <h4>Work together, even if you're apart</h4>
      <p>
        Lorem ipsum dolor sit amet consectetur adipisicing elit. Nisi maiores,
        officiis ea beatae aut quod nihil voluptatem ab asperiores dolore
        nesciunt velit dicta vel iusto aspernatur consectetur magnam consequatur
        similique!
      </p>
      <ul class="tag-list">
        <li>Web</li>
        <li>iOS</li>
        <li>Android</li>
        <li>Window Phone</li>
      </ul>
      <a href="#" class="button">Read more</a>
    </div>
    <div class="title">
      <h4>Work together, even if you're apart</h4>
      <p>
        Lorem ipsum dolor sit amet consectetur adipisicing elit. Nisi maiores,
        officiis ea beatae aut quod nihil voluptatem ab asperiores dolore
        nesciunt velit dicta vel iusto aspernatur consectetur magnam consequatur
        similique!
      </p>
      <a href="#" class="button">Read more</a>
    </div>
  </div>
</div>

three colums using flex box

.container {
  max-width: 1080px;
  margin: auto;
}
.title-row {
  display: flex;
}
.title-row > * {
  flex: 1;
}
.title-row > * + * {
  margin-left: 1.5625em;
}
.title {
  background-color: var(--white);
  border-radius: 0.3em;
}
.title > h4 {
  margin-bottom: 1.5em;
}

Button Hover#

when mouse hover the button, it style including background changes

.button {
  display: inline-block;
  padding: 0.4em 1em;
  color: var(--brand-green);
  border: 2px solid var(--brand-green);
  border-radius: 0.2em;
  text-decoration: none;
  font-size: 1rem;
}
.button--cta {
  padding: 0.6em 1em;
  background-color: var(--brand-green);
  color: var(--white);
  border: none;
}
.button:hover {
  background-color: var(--dark-green);
  color: var(--white);
}