.main-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  background-color: #446144;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.logo a {
  font-size: 1.5rem;
  font-weight: bold;
  text-decoration: none;
  color: #ffffff;
}
.nav-links ul {
  color: #ffffff;
  list-style: none;
  display: flex;
  gap: 20px;
}
.nav-links a {
  color: #ffffff;
  text-decoration: none;
  color: #555;
  transition: color 0.3s;
}
@media (max-width: 768px) {
  .nav-links, .cta-button {
    display: none;
  }
}
* {
  box-sizing: border-box;
}
body {
  font-family: Arial;
  padding: 20px;
  background: #f1f1f1;
}
.header {
  padding: 30px;
  font-size: 40px;
  text-align: center;
  background: white;
}
.leftcolumn {   
  float: left;
  width: 75%;
}
.rightcolumn {
  float: left;
  width: 25%;
  padding-left: 20px;
}
.fakeimg {
  background-color: #aaa;
  width: 100%;
  padding: 20px;
}
.card {
   background-color: white;
   padding: 20px;
   margin-top: 20px;
}
.row:after {
  content: "";
  display: table;
  clear: both;
}
.footer {
   position: fixed;
   left: 0;
   bottom: 0;
   width: 100%;
   background-color: gray;
   color: white;
   text-align: center;
}
@media screen and (max-width: 800px) {
  .leftcolumn, .rightcolumn {   
    width: 100%;
    padding: 0;
  }
}