html {
  font-size: 50%;
}

@media (max-width: 850px) {
  .input-group {
    flex-direction: column;
  }

  .input-control {
    display: block;
  }
}

@media (max-width: 650px) {
  .hero .container {
    flex-direction: column;
    text-align: center;
  }

  .hero .container img {
    order: -1;
  }
}

@media (max-width: 520px) {
  nav {
    display: none;
  }

  .menu-toggle {
    width: 40px;
    height: 30px;
    margin-right: 20px;
    cursor: pointer;
  }

  .one,
  .two,
  .three {
    background-color: #fff;
    height: 4px;
    width: 100%;
    margin: 6px auto;
    transition-duration: 0.3s;
  }

  .menu-section.collapsed {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: #7159c1;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .menu-section.collapsed nav {
    display: block;
  }

  .menu-section.collapsed .menu-toggle {
    position: absolute;
    right: 25px;
    top: 15px;
    cursor: pointer;
  }

  .menu-section.collapsed .one {
    transform: rotate(45deg) translate(7px, 7px);
  }

  .menu-section.collapsed .two {
    opacity: 0;
  }

  .menu-section.collapsed .three {
    transform: rotate(-45deg) translate(8px, -9px);
  }

  .menu-section.collapsed nav ul {
    display: block;
    text-align: center;
  }

  .menu-section.collapsed nav ul a {
    display: block;
    transition-duration: 0.3s;
    font-size: 3rem;
    line-height: 6rem;
  }
}