main.css

@import url('https://fonts.googleapis.com/css?family=Roboto|Source+Sans+Pro:700');

:root {
  --black: #333;
  --green: #69b93b;
}

html {
  box-sizing: border-box;
  font-size: 62.5%;
}

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

body {
  margin: 0;
  padding: 0;
  font-family: 'Roboto', Verdana, Geneva, Tahoma, sans-serif;
  color: var(--black);
  line-height: 1.6;
  font-size: 1.7rem;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Source Sans Pro', Verdana, Geneva, Tahoma, sans-serif;
}

h1 {
  font-size: 4rem;
  text-align: center;
}

a {
  color: var(--green)!important;
  text-decoration: none;
}

a:visited, a:active, a:hover {
  color: inherit;
}

.container {
  width: 70%;
  margin: 0 auto;
}

main {
  display: flex;
  justify-content: space-between;
}

.about {
  width: 60%;
}

.specifics {
  width: 30%;
}

.specifics > div i {
  margin-right: 1.5rem;
  line-height: 1.6;
}

.specifics__when {
  margin-bottom: 3rem;
}

.specifics__where {
  display: flex;
  justify-content: flex-start;
}

.specifics__where, .specifics__when {
  display: flex;
}

.specifics__where p, .specifics__when p {
  margin: 0;
}

.bold {
  font-weight: bold;
}

a.cta-register {
  padding: 1rem;
  border: .2rem solid var(--green);
  color: var(--green);
  text-transform: uppercase;
  margin-top: 2rem;
  display: inline-block;
  font-weight: 600;
}

.logo-container {
  width: 100%;
}

.logo-container img {
  max-width: 100%;
}

.data-title {
  margin-top: 4rem;
}

@media only screen and (max-width: 1050px) {
  h1 {
    margin-bottom: .4rem;
  }
  .container {
    width: 90%;
  }
  main {
    flex-direction: column;
    justify-content: center;
  }
  .specifics {
    display: flex;
    width: 100%;
    flex-direction: row-reverse;
    justify-content: space-evenly;
    align-items: center;
  }
  .specifics > div {
    flex-basis: 40%;
    flex-grow: 0;
  }
  a.cta-register {
    margin-bottom: 2rem;
  }
  .about {
    width: 100%;
    margin-top: 2rem;
  }
  .specifics__when {
    margin-bottom: 2rem;
  }
}

@media only screen and (max-width: 640px) {
  body {
    font-size: 1.4rem;
  }
}