body {
    font-family:'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #e1e8ed;
    margin: 0px;
    padding: 40px;
}
ul li {
    margin-bottom: 20px;
}

header{ 
    text-align: center;
    font-size: 24px;
    margin-bottom: 40px;
}
h1 {
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}
.subtitle {
    font-size: 18px;
    opacity: 0.7;
    margin-bottom: 20px;
}

.row {
    display: flex;
    gap: 20px;
}

.card {
  box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
  transition: 0.3s;
  border-radius: 20px;
  background-color: #fff;
  justify-content: center;
  padding: 20px;
  margin-bottom: 20px;
}
.card h2 {
    font-size: 20px;
    margin-bottom: 20px;
    border-bottom: 3px solid #000;
    padding-bottom: 10px;
}