h1 {
  font-size: 2em;
}
.main {
  padding-top: 2em;
  text-align: center;
}
h3 {
  font-weight: 700;
  margin-bottom: 1em;
}
a {
  color: black;
}
h2 {
  text-transform: uppercase;
  font-size: 0.7em;
}
footer {
  width: 100%;
}


/* NEW CODE */
.title {
  display: inline-block;
  font-size: 2.9rem;
  font-weight: 100;
  padding: 10px 0;
  margin-bottom: 44px;
  text-align: center;
  border-bottom: solid 1px #ccc;
  border-top: solid 1px #ccc;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  line-height: 1.2;
  color: #555;
  margin-top: 20px;
  letter-spacing: 0;
}

.main-title {
  font-family: 'Poppins', sans-serif;
  font-weight: bold;
  font-size: 3.625em;
}

p {
  font-size: 1em;
  font-family: 'Poppins', sans-serif;
  color: #676767;
  line-height: 30px;
  font-weight: 400;
}

/* NAVIGATION */
nav.navbar a.nav-link {
  font-family: 'Poppins', sans-serif;
  letter-spacing: 0.1em;
  margin: 0 5px;
  color: #777;
  padding-top: 30px;
  padding-bottom: 30px;
  border-top: 4px solid transparent;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
  font-size: .875rem;
}

nav.navbar {
  padding-top: 0;
  padding-bottom: 0;
  background: #fff;
  border-bottom: 1px solid #e6e6e6;
}

nav.navbar .navbar-brand {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
  font-family: "Roboto Slab",serif;
}

nav.navbar a.nav-link.active, nav.navbar a.nav-link:hover {
  color: #333;
  border-top-color: #4fbfa8;
}


#presentation img {
  width: 100%;
}

#about .brand-logo {
  width: 400px;
  margin: 0 auto;
}

#about {
  margin: 10% auto;
}

@media screen and (min-width: 768px) {
  h1 {
    font-size: 3em;
  }
  .main {
    text-align: center;
  }
  #presentation img {
    max-width: 400px;
  }
  .main-title {
    font-family: 'Poppins', sans-serif;
    font-weight: bold;
    font-size: 4.625em;
  }
}

.help-text {
  font-size: 10px !important;
}

.img-w {
  width: 100%;
}

.full-h {
  height: 60vh;
}

/* colors */
.greentsu {
  color: #4FBFA8 !important;
}


.bg-greentsu {
  background-color: #4FBFA8 !important;
}

.btn {
  font-family: 'Poppins', sans-serif;
}

.bg-dark {
  border-radius: 10px;
}
.bg-dark img {
    border-top-left-radius: 10px;
    border-bottom-left-radius: 10px;
}

.bg-dark p, .bg-dark ul li {
  font-size: 1em;
  font-weight: 200;
}