body {
  background: rgb(51, 51, 51);
  background: linear-gradient(160deg, rgba(51, 51, 51, 1) 0%, rgba(0, 0, 0, 1) 100%);
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr="#333333", endColorstr="#000000", GradientType=1);
  /* IE fallback */
}

.navbar {
  position: absolute;
  width: 100%;
  background-color: #006847;
  border-bottom: 2px solid #00C400;
  padding: 2vh 0;
  transition: background-color 0.5s, border-bottom-color 0.5s;
}

.navbar-brand {
  color: #fff;
  padding-left: 48px;
  margin-left: 10px;
  background: url('phk-crown.svg') left center no-repeat;
  background-size: 40px;
}

.navbar-brand:focus,
.navbar-brand:hover {
  color: #fff;
}

.form-control {
  background-color: #fff;
  border-color: #006847;
  color: #000;
}

.form-control::placeholder {
  color: #006847;
}

.btn {
  border: none;
  font-size: 0.75em;
  font-weight: bold;
  text-transform: uppercase;
  padding: 6px 18px;
}

.btn-primary {
  background-color: #00C400;
  margin-right: 5px;
}

.btn-primary:hover,
.btn-secondary:hover {
  color: #000;
  background-color: #FFDA00;
}

.btn-secondary {
  background-color: #333;
  margin-left: 5px;
}

.center-logo {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  padding-bottom: 10%;
}

.logo {
  width: 420px;
  height: 240px;
  background: url(phk-logo.svg) center no-repeat;
}

.navbar-nav {
  display: flex;
  flex-direction: row;
  align-items: center;
}

.navbar-nav .nav-item {
  margin-left: 10px;
}

.hidden {
  visibility: hidden;
  position: absolute;
  left: -9999px;
}

@media (max-width: 860px) {
  .navbar-nav {
    width: 100%;
    display: block;
  }

  .navbar-nav .nav-item {
    margin: 0 0 10px 0;
  }

  .navbar-brand {
    margin: 0 auto 10px;
  }

  .btn {
    padding: 12px 0;
  }

  .btn-primary,
  .btn-secondary {
    margin: 5px 0;
  }

  .form-control {
    margin-bottom: 10px;
    width: 100%;
  }

  form {
    display: flex;
    flex-direction: column;
    padding: 0 10%;
  }

  .logo {
    width: 300px;
  }
  .center-logo {
    padding-top: 25%;
  }
}

@media (max-height: 740px) {
  .logo {
    width: 250px;
  }

  .center-logo {
    padding: 10% 0 0 0;
  }
}

@media (max-width: 860px) and (max-height: 780px) {
  .center-logo {
    padding: 50% 0 0 0;
  }
}