html {
  box-sizing: border-box;
  scroll-behavior: smooth;
}

*, *::before, *::after {
  box-sizing: inherit;
}

body {
  font-family: 'Roboto', Helvetica, Arial, "Lucida Grande", sans-serif; 
  font-weight: 300;
  font-size: 16px;
  padding: 0;
  margin: 0;
  --site-width: 980px;
  --color-primary: var(--color-blue-200);
  --color-primary-dark: var(--color-blue-300);
  --color-blue-100: #e3edfb;
  --color-blue-150: #4c9fee;
  --color-blue-200: #4188cc;
  --color-blue-300: #326ca1;
  --color-neutral-100: #fff;
  --color-neutral-200: #f5f4f4;
  --color-neutral-300: #ebebeb;
  --color-neutral-400: #575757;
  --color-neutral-500: #3a3a3a;
  --color-primary-btn: #3075b5;
}

.sale {
  background: var(--color-blue-200);
  color: var(--color-neutral-100);
  z-index: 99;
  top: 0;
  position: sticky;
  padding: 12px;
  text-align: center;
}

.sale a {
  color: var(--color-neutral-100);
}

h1 {
  color: var(--color-neutral-400);
  font-size: 3.6rem;
  font-weight: 300;
  margin: 0 0 24px 0;
  line-height: 4rem;
}

h2 {
  font-weight: 300;
  font-size: 2.5rem;
  margin: 0 0 36px 0;
  line-height: 3rem;
  color: var(--color-neutral-400);
}

h3 {
  font-weight: 300;
  font-size: 1.5rem;
  margin: 0 0 12px 0;
  line-height: 2rem;
  color: var(--color-neutral-400);
}

.h3-bold {
  font-weight: 400;
  margin-bottom: 1.8rem;
  font-size: 2rem;
}

h2 a {
  float: right;
  font-size: 1.1rem;
  text-decoration: none;
  margin-top: 16px;
}

.color-primary {
  color: var(--color-primary);
}

p {
  font-size: 1.1rem;
  line-height: 1.5rem;
  margin: 0;
  margin-bottom: 1.8rem;
}

a {
  color: var(--color-primary-dark);
}

hr {
  margin: 2.4rem 0;
  height: 0;
  border-bottom: 1px solid var(--color-neutral-100);
}

header {
  background-color: var(--color-neutral-500);
  padding: 12px;
}

.header-container {
  max-width: 1024px;
  margin: 0 auto;
  text-align: right;
}

.header-container a {
  margin-left: 18px;
  text-decoration: none;
  color: var(--color-neutral-100);
}

.header-container a:hover {
  text-decoration: underline;
}

.logo {
  width: 100%;
  display: block;
  margin: 0 auto;
  max-width: 150px;
}

@media (min-width: 720px) {
  .logo {
    max-width: 250px;
  }
}

.large-container {
  max-width: 1200px;
  margin: 0 auto;
}

ul {
  margin-bottom: 24px;
}

li {
  margin-bottom: 12px;
  font-size: 1.1rem;
  line-height: 1.5rem;
}

ul.check-list {
  list-style: none;
  font-size: 1.2rem;
}

ul.check-list li {
  position: relative;
  margin-bottom: 2.5rem;
}

ul.check-list li::before {
  position: absolute;
  left: -2.5rem;
  top: -0.5rem;
  content: url(/https/webcomponent.dev/assets/images/check-circle.svg);
  width: 1.5rem;
  height: 1.5rem;
}

ul.table-of-contents {
  list-style: none;
  font-size: 1.3rem;
  font-weight: 400;
}

ul.table-of-contents ul {
  margin-top: 1rem;
  margin-bottom: 2.5rem;
  font-size: 1rem;
  font-weight: 200;
}

.btn {
  background-color: var(--color-primary-btn);
  color: var(--color-neutral-100);
  border: 2px solid var(--color-primary-btn);
  border-radius: 4px;
  padding: 13px 20px;
  font-size: 18px;
  text-decoration: none;
  font-weight: 500;
  display: inline-block;
  cursor: pointer;
  margin-right: 4px;
  margin-bottom: 12px;
  text-align: center;
}

.btn:hover {
  background-color: var(--color-primary-dark);
}

.btn.btn-outline {
  color: var(--color-primary-btn);
  border-color: var(--color-primary-btn);
  background-color: transparent;
}

.btn.btn-outline:hover {
  background-color: var(--color-primary-btn);
  color: var(--color-neutral-100);
}

.btn-large {
  padding: 18px 20px;
  font-size: 20px;
}

.btn-link {
  padding: 18px 36px;
  text-decoration: none;
  display: inline-block;
}

.btn-link:hover {
  text-decoration: underline;
}

.word-space {
  margin-right: 0.5rem;
  display: inline-block;
}

.word-divide {
  margin: 0 0.5rem;
  display: inline-block;
}

.hero {
  background-color: var(--color-neutral-100);
  min-height: 300px;
  padding: 12px 12px 18px 12px;
}

@media (min-width: 1024px) {
  .hero {
    padding: 65px 12px 30px 12px;
  }
}

.hero h2 {
  color: var(--color-neutral-500);
  font-weight: 300;
  font-size: 1.6em;
}

.hero-section {
  padding: 48px 12px;
  margin: 0 auto;
}

.hero-section-author {
  border-radius: 50%;
  margin-top: -24px;
  border: 2px solid var(--color-neutral-300);
}

.hero-section:nth-child(odd) {
  background-color: var(--color-neutral-200);
  padding-top: 75px;
  padding-bottom: 100px;
}

.hero-top {
  padding-top: 40px;
  padding-bottom: 20px;
  background-color: var(--color-neutral-500);
  color: var(--color-neutral-100);
}

.hero-top h2 {
  line-height: 2.5rem;
}

@media(min-width: 1024px) {
  .hero-top {
    margin-bottom: 80px;
  }
}

.hero-top h1, .hero-top h2 {
  color: var(--color-neutral-100);
}

.hero-top .color-primary {
  color: var(--color-blue-150);
}

.slant {	
  position: relative;	
  z-index: 1;	
}	
	
.slant:after {	
  background: inherit;	
  content: '';	
  display: block;	
  height: 50%;	
  left: 0;	
  position: absolute;	
  right: 0;	
  z-index: -1;	
  -webkit-backface-visibility: hidden;	
}	

.slant:after {	
  bottom: 0;	
  transform: skewY(-3.5deg);	
  transform-origin: 100%;	
  border-bottom: 5px solid var(--color-primary);	
}

.newsletter-form {
  display: block;
  max-width: 480px;
  overflow: hidden;
  position: relative;
  height: 47px;
  margin-bottom: 24px;
}

.newsletter-form input {
  width: 75%;
  padding: 13px;
  float: left;
  height: 48px;
  font-size: 16px;
}

.newsletter-form button {
  background-color: var(--color-primary-btn);
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
  position: absolute;
  right: 0;
  padding: 11px 20px;
}

label {
  color: var(--color-neutral-100);
  font-size: 20px;
  margin-bottom: 8px;
  display: block;
}

.article {
  background-color: var(--color-neutral-100);
  border-radius: 4px;
  color: var(--color-neutral-500);
  text-decoration: none;
  padding: 12px;
  overflow: hidden;
  box-shadow: 0 4px 5px 0 rgba(0,0,0,0.14), 0 1px 10px 0 rgba(0,0,0,0.12), 0 2px 4px -1px rgba(0,0,0,0.2)
}

.article img {
  margin: -12px 0 0 -12px;
  max-height: 200px;
}

.video {
  overflow: hidden;
  padding-bottom: 56.25%;
  position: relative;
  height: 0;
  max-width: 700px;
  margin: 0 auto;
}

.video iframe {
  left: 0;
  top: 0;
  height: 100%;
  width: 100%;
  position:absolute;
}

.icon-list {
  margin-top: 24px;
}

.icon-list__item {
  overflow: hidden;
}

.icon-list h3 {
  margin-top: 8px;
}

.icon-list img {
  height: 45px;
  width: 45px;
  margin-bottom: 120px;
  margin-right: 16px;
  background-color: var(--color-blue-200);
  padding: 8px;
  border-radius: 50%;
  float: left;
}

@media (min-width: 1000px) {
  .icon-list img {
    margin-bottom: 70px;
  }
}

.icon-list .icon-circle-play {
  padding: 10px;
}

.video-clip {
  font-weight: 400;
  text-align: center;
}

.video-clip div {
  position: relative;
}

.video-category-time {
  font-size: 14px;
  color: var(--color-neutral-400);
}

.video-clip div::before {
  background: rgba(0, 0, 0, 0.5);
  content: '';
  width: 100px;
  height: 75px;
  top: calc(50% - 40px);
  left: calc(50% - 50px);
  position: absolute;
  z-index: 98;
  border-radius: 4px;
}

.video-clip div::after {
  background-image: url('/https/webcomponent.dev/assets/images/play-white.svg');
  content: '';
  height: 36px;
  width: 36px;
  top: calc(50% - 22px);
  left: calc(50% - 18px);
  position: absolute;
  z-index: 99;
}

.video-clip img {
  width: 100%;
  border: 1px solid var(--color-neutral-300);
}

.video-category {
  font-size: 26px;
  font-weight: 400;
  padding-top: 28px;
  margin-top: 12px;
  margin-bottom: 20px;
  border-top: 1px solid var(--color-neutral-300);
}

.purchase-container {
  max-width: 900px;
  margin: 0 auto;
}

/* inline pricing */
@media (min-width: 720) {
  .inline-pricing--description {
    padding-left: 24px;
  }
}

/* card pricing */
.card {
  background: var(--color-neutral-100);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 16px 36px 0 rgba(42, 51, 83, 0.10),0 5px 15px rgba(0, 0, 0, 0.06);
}

.card__header {
  background: var(--color-blue-100);
  padding: 20px 24px;
  text-align: center;
  font-weight: 500;
}

.strike {
  text-decoration: line-through;
}

.card__content {
  padding: 0 24px 24px 24px;
}

.card__btn {
  width: 100%;
  text-align: center;
}

.card__book {
  max-width: 140px;
}

.card__starter {
  margin-top: 20%;
}

.used-by {
  display: flex;
  align-content: center;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  padding: 24px 0 0 0;
  max-width: 1200px;
  margin: 0 auto;
}

.used-by img {
  max-width: 150px;
  max-height: 50px;
  width: auto;
  margin: 9px 18px 18px 18px;
}

.used-by [alt='Amazon'] {
  margin-bottom: -4px;
}

.used-by [alt='Apple'] {
  margin-bottom: 25px;
}