style.css

p {
  color: hsla(0, 0%, 100%, 0.75);
  font-family: 'Lexend Deca', sans-serif;
  min-width: 100px;
  max-width: 100px;
}

h1 {
  color: hsl(0, 0%, 95%);
  font-family: 'Big Shoulders Display', cursive;
}

body {
  background-color: hsl(0, 0%, 95%);
  margin: 25%;
}

button {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  background-color: hsl(0, 0%, 95%);
  font-family: 'Lexend Deca', sans-serif;
  border-radius: 8px;
  height: 40px;
  max-width: 300px;
}

button:hover {
  background-color: hsl(0, 0%, 80%);
  color: hsl(0, 0%, 20%);
}

.first-block {
  background-color: hsl(31, 77%, 52%);
}

.second-block {
  background-color: hsl(184, 100%, 22%);
}

.third-block {
  background-color: hsl(179, 100%, 13%);
}

.first-block button {
  color: hsl(31, 77%, 52%);
}

.second-block button {
  color: hsl(184, 100%, 22%);
}

.third-block button {
  color: hsl(179, 100%, 13%);
}

.attribution {
  font-size: 11px;
  text-align: center;
}

.attribution a {
  color: hsl(228, 45%, 44%);
}

.container {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 80%;
}

.first-block,
.second-block,
.third-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 30px;

}

@media only screen and (max-width: 699px) {
  .container {
    flex-direction: column;
  }

  .first-block,
  .second-block,
  .third-block {
    flex-basis: 100%;
  }
}

@media only screen and (min-width: 700px) {
  .container {
    flex-direction: row;
    justify-content: space-around;
  }

  .first-block,
  .second-block,
  .third-block {
    flex-basis: 30%;
  }
}