Código CSS

:root {
  --white: #ffffff;
  --black: #000000;
  --very-light-pink: #c7c7c7;
  --text-input-field: #f7f7f7;
  --hospital-green: #acd9b2;
  --sm: 14px;
  --md: 16px;
  --lg: 18px;
}
body {
  margin: 0;
  font-family: "Quicksand", sans-serif;
}
nav {
  display: flex;
  justify-content: space-between;
  padding: 0 24px;
  border-bottom: 1px solid var(--very-light-pink);
}
.menu {
  display: none;
}
.logo {
  width: 100px;
}
.navbar-left ul,
.navbar-right ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  align-items: center;
  height: 60px;
}
.navbar-left {
  display: flex;
}
.navbar-left ul {
  margin-left: 12px;
}
.navbar-left ul li a,
.navbar-right ul li a {
  text-decoration: none;
  color: var(--very-light-pink);
  border: 1px solid var(--white);
  padding: 8px;
  border-radius: 8px;
}
.navbar-left ul li a:hover,
.navbar-right ul li a:hover {
  border: 1px solid var(--hospital-green);
  color: var(--hospital-green);
}
.navbar-email {
  color: var(--very-light-pink);
  font-size: var(--sm);
  margin-right: 12px;
}
.navbar-shopping-cart {
  position: relative;
}
.navbar-shopping-cart div {
  width: 16px;
  height: 16px;
  background-color: var(--hospital-green);
  border-radius: 50%;
  font-size: var(--sm);
  font-weight: bold;
  position: absolute;
  top: -6px;
  right: -3px;
  display: flex;
  justify-content: center;
  align-items: center;
}
@media (max-width: 640px) {
  .menu {
    display: block;
  }
  .navbar-left ul {
    display: none;
  }
  .navbar-email {
    display: none;
  }
}

Archivos de la Clase

https://github.com/FROSTYLAN/Notes-JavascriptSchool/commit/ef2c73b18377da94824aea83480b5f7bbf09925d

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