body {  
    background-color: #f0f8ff;  
    font-family: 'Arial', sans-serif;  
    line-height: 1.6;  
    color: #333;  
}  

h1, h2, h3 {  
    color: #2c3e50;  
}  

a {  
    color: #3498db;  
    text-decoration: none;  
}  

a:hover {  
    text-decoration: underline;  
}  

.container {  
    width: 80%;  
    margin: 0 auto;  
    overflow: auto;  
}  

.navbar {  
    background-color: #2c3e50;  
    padding: 10px;  
    display: flex;  
    justify-content: space-between;    
}  

.navbar a {  
    color: white;  
    padding: 14px 20px;  
    text-align: center;  
}   

.footer {  
    background-color: #2c3e50;  
    text-align: center;  
    color: white;  
    padding: 10px 0;  
    position: fixed;  
    bottom: 0;  
    width: 100%;  
}  

.button {  
    background-color: #4caf50;  
    border: none;  
    color: white;  
    padding: 15px 32px;  
    text-align: center;  
    text-decoration: none;  
    display: inline-block;  
    font-size: 16px;  
    margin: 4px 2px;  
    cursor: pointer;  
    border-radius: 16px;  
}