body {
  background-color: rgb(229, 231, 235);
  font-family: system-ui;
  text-align: center;
}

h1 {
  padding-top: 30px;
  padding-bottom: 20px;
}

button {
  border: none;
  background-color: rgb(34, 197, 94);
  color: white;
  padding: 10px 20px;
  text-transform: uppercase;
  cursor: pointer;
  font-weight: bold;
}

ul {
  padding: 20px 0;
  list-style-type: none;
}

li {
  display: inline;
  color: gray;
  padding-left: 20px;
  padding-right: 20px;
}
nav {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  margin-top: 2rem;
}
nav a {
  font-weight: 500;
  color: #6b7280;
}
nav a:hover {
  color: #111827;
}
header nav a:last-child {
  color: #ffffff;
  background-color: #3b82f6;
  padding-left: 0.75rem;
  padding-right: 0.75rem;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
  margin-top: -0.5rem;
  border-radius: 0.5rem;
}
nav a:last-child:hover {
  background-color: #2563eb;
}
nav span {
  font-weight: bold;
}
footer {
  padding-top: 1rem;
  margin-top: 5rem;
  border-top: 2px solid #d1d5db;
}
footer p {
  text-align: center;
  color: #9ca3af;
}
#features {
  padding-left: 2.5rem;
  padding-right: 2.5rem;
  margin-top: 5rem;
  text-align: center;
}
#features h2 {
  color: #111827;
}
#features p {
  font-size: 1.25rem;
  color: #6b7280;
}
#features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 3rem;
}
@media screen and (max-width: 500px) {
  #features-grid {
    grid-template-columns: 1fr;
  }
}

#features-grid div {
  padding: 1.5rem;
  border-radius: 0.5rem;
  background-color: #f9fafb;
}
#pricing {
  display: grid;
  gap: 2rem;
  margin-left: 1rem;
  margin-right: 1 rem;
}
@media (min-width: 640px) {
  #pricing {
    grid-template-columns: 1fr 1fr;
  }
}
#pricing div {
  display: flex;
  padding: 1rem;
  flex-direction: column;
  border-radius: 1rem;
  background-color: #ffffff;
}
#pricing h3 {
  font-size: 1.875rem;
  margin-bottom: 0;
  text-transform: uppercase;
}

#pricing h4 {
  font-size: 1.1rem;
  color: #6b7280;
}

#pricing ul {
  display: grid;
  gap: 1.2rem;
  text-align: left;
  padding-left: 2rem;
  margin-top: 0;
}

#pricing .price {
  font-size: 3rem;
  font-weight: 800;
}

#pricing .per-month {
  font-weight: 600;
}

#pricing .check {
  font-size: 1.5rem;
  color: #3b82f6;
}
#sign-up {
  display: block;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
  margin-top: 2rem;
  border-radius: 0.375rem;
  color: #ffffff;
  background-color: #3b82f6;
  margin-left: 1rem;
  margin-right: 1rem;
  cursor: pointer;
}

#sign-up:hover {
  background-color: #2563eb;
}
#blog {
  display: grid;
}
#blog .post {
  display: flex;
  padding: 2rem;
  margin-bottom: 2.5rem;
  flex-direction: column;
  border-radius: 1rem;
  background-color: #ffffff;
  margin-left: 1rem;
  margin-right: 1rem;
}

#blog .post time {
  margin-bottom: 1rem;
  color: #9ca3af;
  text-transform: uppercase;
}
#blog .post p {
  color: #6b7280;
}