style.css

:root {
  --main-colour: brown;
}

body {
  max-width: 1800px;
  margin: 0 auto;
}

* {
  margin: 0;
  padding: 0;
  font-family: sans-serif;
}

/* header  */
header {
  width: 100%;
  position: relative;
  display: flex;
  justify-content: space-between;
}

#sideNav {
  padding-right: 100px;
  position: fixed;
  right: -100%;
  top: 0;
  background: var(--main-colour);
  z-index: 2;
  transition: .5s;
}

nav ul li {
  list-style: none;
  margin: 25px 20px;
  display: inline-block;
}

nav ul li a {
  text-decoration: none;
  color: #fff;
  display: block;
}

#menuBtn {
  height: 68px;
  position: fixed;
  right: 0;
  top: 0;
  z-index: 2;
  cursor: pointer;
}

.logo {
  position: absolute;
  margin-top: 10px;
  left: 20px;
  width: 140px;
}

/* General */
.container {
  margin-right: 100px;
  margin-left: 100px;
}

h1 {
  font-size: 34px;
}

.square {
  height: 12px;
  width: 12px;
  display: inline-block;
  background: var(--main-colour);
  margin: 15px 0;
}

.common-btn {
  padding: 18px 40px;
  background: transparent;
  outline: none;
  border: 2px solid var(--main-colour);
  font-weight: bold;
  cursor: pointer;
}

p {
  font-size: 15px;
  line-height: 18px;
  color: #777;
}

.line-1 {
  width: 15px;
  height: 15px;
  background: var(--main-colour);
  display: inline-block;
}

.line-2 {
  width: 80px;
  height: 1px;
  background: var(--main-colour);
  display: inline-block;
}

.line-3 {
  width: 60px;
  height: 1px;
  background: var(--main-colour);
  display: inline-block;
}

.line {
  line-height: 8px;
}

/* Sections */
section.page-section {
  display: flex;
  align-items: center;
  height: 100vh;
}

/* General flex container */
.flex-container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  width: 100%;
}

.flex-container {
  width: 100%;
}

.flex-container>* {
  flex: 1 1 50%;
}

/* top section */
#top-section {
  height: 100vh;
  background-image: url('images/coffee-farmer.png');
  background-position: center;
  background-size: cover;
}

.top-section-text {
  max-width: 500px;
  margin-top: 140px;
}

.top-section-text button {
  margin-top: 20px;
  margin-bottom: 60px;
}

/*----about----*/
#about {
  background-image: url('images/coffee-cup.png');
  background-position: left center;
  background-size: contain;
  background-repeat: no-repeat;
}

#about .flex-container {
  justify-content: flex-end;
}

.about-left-col {
  height: 100%;
}

.about-left-col img {
  width: 100%;
}

.about-right-col {
  text-align: left;
}

.about-text {
  max-width: 500px;
  padding-left: 100px;
  /* margin-right: 100px; */
  /* display: inline-block; */
}

.about-text h2 {
  margin: 50px 0 10px;
  font-size: 28px;
  font-style: italic;
}

.about-text h3 {
  font-size: 20px;
  font-style: italic;
  color: #797979;
}

/*----coffee---*/
#coffee {
  padding-top: 50px;
  padding-bottom: 50px;
}

#coffee .flex-container {
  flex-direction: column;
}

.coffee-row {
  width: 80%;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-around;
  flex-wrap: wrap;
}

.coffee-row>* {
  flex: 1 1 25%;
  text-align: center;
}

.coffee-col {
  padding:0 10px;
}

.coffee-col img {
  width: 100%;
}
.coffee-col p {
  /* min-height: 100px; */
}

.coffee-col h4 {
  margin-bottom: 15px;
  font-size: 20px;
  font-weight: 400;
}

.coffee-btn {
  margin: 80px auto 0;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.coffee-btn .line {
  text-align: right;
  display: inline-block;
  margin-right: 25px;
}

/*---contact---*/
.contact-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.contact-left-col, .contact-right-col {
  flex-basis: 50%;
}

.contact-right-col img {
  width: 100%;
}

form {
  max-width: 350px;
  margin: 30px 0;
}

form input {
  width: 100%;
  padding: 12px 10px;
  margin-bottom: 5px;
  outline: none;
  box-shadow: none;
  box-sizing: border-box;
  border: 2px solid var(--main-colour);
}

.btn-box {
  width: 100%;
  display: flex;
  justify-content: space-between;
}

.btn-box button {
  flex-basis: 48%;
  padding: 18px 0;
}

/*----footer----*/
#footer {
  padding: 50px 0 30px;
}

hr {
  width: 100%;
  border: 0;
  border-top: 1px solid var(--main-colour);
}

.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.footer-left-col {
  flex-basis: 50%;
  margin-top: 60px;
}

.footer-right-col {
  flex-basis: 35%;
}

.footer-links {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}

.link-title h4 {
  color: #fab3c4;
  margin-bottom: 20px;
}

.link-title small {
  font-size: 13px;
  color: #777;
}

.footer-info {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
}

.footer-logo img {
  width: 100px;
}

.footer-logo button {
  padding: 12px 38px;
  margin-top: 20px;
  font-size: 10px;
}

.copyright-text, .footer-logo {
  flex-basis: 40%;
}

/*---social-icons---*/
.social-icons {
  width: 50px;
  position: fixed;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  z-index: 1;
}

.social-icons img {
  display: block;
  width: 20px;
  margin: 0 auto 20px;
  cursor: pointer;
}

@media only screen and (max-width: 770px) {
  .flex-container {
    flex-direction: column;
  }

  .flex-container>* {
    flex: 1 1 100%;
  }

  #about {
    background-position: 220px 0px;
  }

  .about-text {
    padding: 0;
    max-width: auto;
  }

  #top-section {
    background-position: center -100px;
    background-repeat: no-repeat;
  }

  .container {
    margin-right: 50px;
    margin-left: 50px;
  }

  .logo {
    margin-top: 10px;
    width: 100px;
  }

  .top-section-text {
    margin-top: 100px;
  }

  h1 {
    font-size: 25px;
  }

  #menuBtn {
    width: 46px;
    height: auto;
  }

  #sideNav {
    padding-right: 10px;
  }

  nav ul li {
    display: block;
  }

  .common-btn {
    padding: 10px 16px;
  }

  .social-icons img {
    width: 14px;
    margin: 15px auto;
  }

  .about-left-col, .about-right-col {
    flex-basis: 100%;
  }

  .about-text h2 {
    font-size: 18px;
  }

  .feature-col {
    flex-basis: 100%;
    margin-bottom: 20px;
  }

  .course-left-col {
    flex-basis: 100%;
  }

  .course-right-col {
    flex-basis: 100%;
    margin-top: 70px;
  }

  .contact-left-col, .contact-right-col {
    flex-basis: 100%;
  }

  .contact-right-col {
    margin-top: 50px;
  }

  .footer-left-col, .footer-right-col {
    flex-basis: 100%;
  }

  .link-title {
    flex-basis: 50%;
    margin-bottom: 30px;
  }
}