@import url('https://fonts.googleapis.com/css2?family=Karla:wght@400;700&display=swap');

:root {
  --Cyan: hsl(179, 62%, 43%);
  --BrightYellow: hsl(71, 73%, 54%);
  --LightGray: hsl(204, 43%, 93%);
  --GrayishBlue: hsl(218, 22%, 67%);
}

* {
  box-sizing: border-box;
  margin: 0;
}

ul {
  list-style-type: none;
}

h1,
h3 {
  line-height: 1.2;
}

body {
  font-family: 'Karla', sans-serif;
  background: var(--LightGray);
  line-height: 1.5;
}

.container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 50px 0 0;
  max-width: 300px;
  margin: auto;
}

.hero {
  background: #fff;
  border-radius: 5px 5px 0 0;
  padding: 20px;
}

.hero h1 {
  font-size: 22px;
  color: var(--Cyan);
  margin-bottom: 20px;
}

.hero h3 {
  font-size: 16px;
  color: var(--BrightYellow);
  margin-bottom: 20px;
}

.hero p {
  font-size: 15px;
  color: var(--GrayishBlue);
  margin-bottom: 10px;
  line-height: 1.8;
}

.bottom {
  background: hsl(179, 93%, 32%);
  color: #fff;
  border-radius: 0 0 5px 5px;
}

.bottom h2 {
  font-size: 18px;
  margin-bottom: 10px;
}

.bottom .darker {
  padding: 20px;
}

.bottom .darker h4 {
  display: flex;
  align-items: center;
  font-weight: 400;
  color: var(--LightGray);
}

.bottom .darker h4 span {
  font-weight: 700;
  font-size: 30px;
  color: #fff;
  margin-right: 10px;
}

.bottom .darker p {
  font-size: 15px;
  margin-bottom: 25px;
}

.bottom .darker .btn {
  font-weight: 700;
  background: var(--BrightYellow);
  color: #fff;
  outline: none;
  border: none;
  border-radius: 5px;
  width: 100%;
  margin-bottom: 5px;
  padding: 15px;
  box-shadow: 0 3px 5px rgba(50, 61, 1, 0.5);
}

.bottom .darker .btn:hover {
  cursor: pointer;
}

.lighter {
  background: var(--Cyan);
  padding: 20px;
  border-radius: 0 0 5px 5px;
}

.lighter ul {
  padding: 0;
}

.lighter ul li {
  font-size: 14px;
  color: var(--LightGray);
}

.attribution {
  font-size: 13px;
  margin: 10px 0;
  padding-bottom: 50px;
  text-align: center;
}

.attribution a {
  color: hsl(228, 45%, 44%);
}

@media (min-width: 768px) {
  .container {
    padding-top: 100px;
    max-width: 650px;
    border-radius: 10px;
  }

  .hero {
    padding: 50px;
    border-radius: 10px 10px 0 0;
  }

  .bottom {
    display: flex;
    justify-content: space-between;
    padding-bottom: 0;
  }

  .bottom .darker {
    padding: 50px 30px 50px 50px;
  }

  .lighter {
    display: flex;
    flex-direction: column;
    border-radius: 0 0 10px 0;
    width: 330px;
    padding: 50px 0 0 50px;
  }

  .lighter ul li {
    line-height: 1.7;
  }
}