body, html {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
}

:root {
    --primary-color: #3498db;     
    --secondary-color: #e74c3c;    
    --accent-color: #2ecc71;     
    --neutral-color: #95a5a6;      
}

body {
    background-color: #ecf0f1;   
    color: #34495e;                
}

a {
    color: var(--primary-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

header {
    background-color: var(--primary-color);
    color: #fff;
    padding: 10px;
    text-align: center;
}

footer {
    background-color: var(--neutral-color);
    color: #fff;
    text-align: center;
    padding: 10px;
    position: fixed;
    bottom: 0;
    width: 100%;
}

.button {
    background-color: var(--secondary-color);
    color: #fff;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 5px;
}

.button:hover {
    background-color: #c0392b; 
}

input[type="text"], input[type="email"], textarea, select {
    width: 100%;
    padding: 10px;
    margin: 5px 0;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.section {
    padding: 20px;
    margin-bottom: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}