style.css

@import url('https://fonts.googleapis.com/css2?family=Bai+Jamjuree:wght@400;600&display=swap');
* {
  margin: 0;
  padding: 0;
}
article {
  width: 100%;
  text-align: center;
}
.header {
  background-image: url('./images/bg-header-mobile.png');
  background-size: cover;
  background-position: center;
  overflow: auto;
  width: 100%;
}
#logo {
  margin: 100px 0 50px 0;
}
h1 {
  font-size: 2rem;
  color: hsl(210, 10%, 33%);
  font-family: 'Bai Jamjuree', Sans-Serif;
  font-weight: 600;
}
h2 {
  font-size: 1.7rem;
}
h3 {
  font-size: 1.4rem;
}
h2, h3 {
  color: hsl(210, 10%, 33%);
  font-family: 'Bai Jamjuree', Sans-Serif;
  font-weight: 600;
}
p:not(.attribution) {
  font-size: 1.1rem;
  color: hsl(201, 11%, 66%);
  font-family: 'Bai Jamjuree', Sans-Serif;
  font-weight: 400;
}
.cta {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.cta > *:not(button) {
  width: 90%;
}
.cta > p {
  margin: 20px 0 60px 0;
  line-height: 1.5;
  font-weight: 400;
}
button {
  display: block;
  margin: 0 auto;
  padding: 20px 75px 15px 75px;
  outline: none;
  border: none;
  border-radius: 90px;
  font-size: 1.125rem;
  font-family: 'Bai Jamjuree', Sans-Serif;
  font-weight: 600;
  color: #fcfcfc;
  cursor: pointer;
}
.ios {
  margin-bottom: 20px;
  background-color: hsl(171, 66%, 44%);
  box-shadow: 0 0 10px 1px hsla(171, 66%, 44%,.5);
  border-bottom: 3px solid rgb(31,158,139);
}
.mac {
  background-color: hsl(233, 100%, 69%);
  box-shadow: 0 0 10px 1px hsla(233, 100%, 69%,.5);
  border-bottom: 3px solid rgb(46,70,255);
}
ul li {
  list-style: none;
}
section, #sec4 {
  margin: 0 auto;
  width: 90%;
}
#sec1 {
  margin-top: 150px;
}
#sec1 > p {
  margin: 25px 0 60px 0;
  line-height: 1.5;
}
#computer > img, #devices > img {
  width: 100%;
}
#subsect > ul {
  display: flex;
  flex-direction: column;
  gap: 45px;
  margin: 30px 0 0 0;
}
#subsect > ul li p {
  margin: 15px 0 0 0;
}
#sec2 {
  margin-top: 200px;
}
#sec2 > p {
  margin: 25px 0 60px 0;
  line-height: 1.5;
}
#sec3 {
  margin-top: 100px;
}
#sec3 > p {
  margin: 15px 0 85px 0;
  line-height: 1.5;
}
#sec3 > ul {
  display: flex;
  flex-direction: column;
  gap: 45px;
  margin: 30px 0 0 0;

}
#sec3 > ul li h3 {
  margin: 35px 0 20px 0;
}
#sec4 {
  margin-top: 125px;
  margin-bottom: 150px;
}
#testimonials {
  display: flex;
  flex-direction: column;
  gap: 60px;
}
#testimonials li > img {
  width: 130px;
}
footer {
  margin-top: 150px;
  padding: 50px 0 50px 0;
  text-align: center;
  background-color: hsl(200,13.5%,93%);
}
#footer-logo {
  display: inline-block;
  margin: 0 0 30px 0;
}
#footer-logo > img {
  display: block;
  height: 50px;
  width: 50px;
}
#links {
  display: flex;
  flex-direction: column;
  gap: 30px;
}
#links li {
  display: block;
}
footer ul li a {
  padding: 10px;
  text-decoration: none;
  color: hsl(210, 10%, 33%);
  font-size: 1rem;
  font-family: 'Bai Jamjuree', Sans-Serif;
  font-weight: 600;
  cursor: pointer;
}
footer ul li a:hover {
  color: hsl(171, 66%, 44%);
}
#social {
  margin: 60px 0 0 0;
  display: flex;
  justify-content: center;
  gap: 30px;
}
footer svg {
  cursor: pointer;
}
footer svg:hover > path {
  fill: hsl(171, 66%, 44%);
}
.attribution {
  margin: 50px 0 0 0;
  text-align: center;
  font-size: .687rem;
  font-family: 'Bai Jamjuree', Sans-Serif;
  font-weight: 400;
  color: hsl(210, 10%, 33%);
}
.attribution a {
  color: hsl(228, 45%, 44%);
  cursor: pointer;
}
@media (min-width: 769px) {
  .cta > *:not(.btns), #sec1 > *:not(#subsect), #sec2 > *:not(#devices) {
    margin-right: auto;
    margin-left: auto;
    width: 40%;
  }
  #sec3, #sec4 {
    width: 80%;
  }
  .header {
  background-image: url('./images/bg-header-desktop.png');
  }
  .btns {
    display: flex;
    justify-content: center;
    gap: 20px;
  }
  button {
    margin: 0;
    padding: 20px 60px 15px 60px;
  }
  .ios {
    margin: 0;
  }
  #sec1 {
    display: flex;
    flex-direction: column;
    width: 100%;
  }
  #subsect {
    display: flex;
    gap: 75px;
    align-items: center;
    text-align: left;
  }
  #subsect img {
    transform: translateX(-5%);
  }
  #computer {
    flex: 1 0 55%;
  }
  #subsect > ul {
    flex: 0 1 45%;
    margin: 0 20% 0 0;
  }
  #sec2 {
    width: 100%;
  }
  #devices > img {
    width: 55%;
  }
  #sec3 > ul {
    flex-direction: row;
    justify-content: space-evenly;
    flex-wrap: wrap;
  }
  #sec3 ul > * {
    flex: 0 0 350px;
  }
  #testimonials {
    flex-direction: row;
    justify-content: space-evenly;
    flex-wrap: wrap;
    gap: 0;
  }
  #footer-items {
    display: flex;
    justify-content: space-evenly;
  }
  #footer-logo {
    margin: 0 0 0 50px;
  }
  #links {
    flex-direction: row;
    column-count: 3;
    flex-wrap: wrap;
    gap: 10px;
    margin: 0 70px 0 30px;
    text-align: left;
  }
  #links > li {
    margin: 0 0 0 48px;
    width: 20%;
  }
  #social {
    margin: 0 50px 0 0;
  }
}