:root {
  --primary-color: #007bff;
  --secondary-color: #6c757d;
  --background-color: #f8f9fa;
  --text-color: #343a40;
  --link-color: #007bff;
  --border-radius: 0.25rem;
}

body {
  font-family: 'Arial', sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--background-color);
  color: var(--text-color);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  background-color: var(--primary-color);
}

nav a {
  color: #fff;
  text-decoration: none;
  margin: 0 1rem;
}

.container .row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.container .col-3 {
  flex: 0 0 calc(25% - 1rem);
  max-width: calc(25% - 1rem);
}

.container .col-9 {
  flex: 0 0 calc(75% - 1rem);
  max-width: calc(75% - 1rem);
}

.property-listing {
  border: 1px solid var(--secondary-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  margin-bottom: 1rem;
}

.property-image {
  width: 100%;
  height: auto;
}

.property-info {
  padding: 1rem;
}

.footer {
  background-color: var(--primary-color);
  color: #fff;
  text-align: center;
  padding: 1rem 0;
  position: relative;
}

@media (max-width: 768px) {
  .container .row {
    flex-direction: column;
  }
  
  .col-3, .col-9 {
    width: 100%;
    max-width: 100%;
  }
}