body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  padding: 0;
  background: #f7f7f7;
  color: #222;
}
header {
  background: #2d2d2d;
  color: #fff;
  padding: 2em 0 1em 0;
  text-align: center;
}
nav {
  margin: 1em 0;
}
nav a {
  color: #fff;
  text-decoration: none;
  margin: 0 1em;
  font-weight: bold;
  font-size: 1.1em;
}
nav a:hover {
  text-decoration: underline;
}
main {
  max-width: 700px;
  margin: 2em auto;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 2px 16px rgba(0,0,0,0.07);
  padding: 2em;
}
h1, h2 {
  margin-top: 0;
}
form {
  display: flex;
  flex-direction: column;
  gap: 1em;
  max-width: 400px;
  margin: 1em 0;
}
input, textarea {
  padding: 0.5em;
  border-radius: 4px;
  border: 1px solid #ccc;
}
button[type="submit"] {
  padding: 0.7em 1.5em;
  border: none;
  border-radius: 4px;
  background: #2d2d2d;
  color: #fff;
  font-size: 1em;
  cursor: pointer;
}
button[type="submit"]:hover {
  background: #444;
}
footer {
  text-align: center;
  padding: 2em 0;
  background: #2d2d2d;
  color: #fff;
  margin-top: 2em;
  border-radius: 0 0 10px 10px;
}
.border-image {
  width: 100vw;
  height: 140px;
  background: url('https://media.licdn.com/dms/image/v2/D4D16AQG-0pEYsxBG1A/profile-displaybackgroundimage-shrink_350_1400/profile-displaybackgroundimage-shrink_350_1400/0/1734361175448?e=1762992000&v=beta&t=4mRrI-2Yn_Vx9q-h7LAgTAknFvbUTJAXOILrK2n2rUA') center center no-repeat;
  background-size: cover;
  border-bottom: 8px solid #444;
  margin-bottom: 0.5em;
  box-shadow: 0 4px 24px rgba(0,0,0,0.12);
}
@media (max-width: 700px) {
  main {
    padding: 1em;
  }
  nav a {
    margin: 0 0.5em;
    font-size: 1em;
  }
}