* {
  box-sizing: border-box;
}

html {
  height: 100%;
  background: #fff;
}

body {
  height: 100%;
  margin: 0;
  padding: 0;
  font-family: "Lato", serif;
}

.a {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100%;
  padding: 1rem 2rem;
}

.a h1 {
  font-size: 3rem;
  text-align: center;
  line-height: 3rem;
  margin: 0 0 1.5rem 0;
  padding: 0;
  color: #262a33;
}

.b {
  flex-shrink: 0;
  padding: 1rem;
  width: 300px;
  padding: 2rem 2rem 1rem 2rem;
}

.b a {
  background-color: #262a33;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  color: #fff;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 300;
  border: 1px solid #262a33;
  transition: transform 0.2s, outline 0.2s, border 0.2s;
}

.b a:hover {
  transform: scale(1.06);
}

.b a:focus,
.b a:active {
  border: 1px solid #fff;
  outline: 2px solid #262a33;
}

.b a svg {
  height: 1.25rem;
  width: 1.25rem;
}

main {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

@media screen and (max-width: 450px) {
  .b {
    width: 100%;
  }

  .a h1 {
    font-size: 2.75rem;
  }

  .b {
    padding: 1rem;
  }

  .b a {
    padding: 1rem;
  }
}