body {
    font-family: 'Verdana', sans-serif;
    background-color: #f4f9f9;
    color: #212121;
    margin: 0;
    padding: 0;
}
header {
    background-color: #2c3e50;
    color: #ffffff;
    padding: 20px;
    text-align: center;
}
footer {
    background-color: #34495e;
    color: white;
    padding: 10px;
    text-align: center;
}
nav {
    background-color: #1abc9c;
    padding: 10px;
    text-align: center;
}
nav a {
    color: white;
    margin: 0 15px;
    text-decoration: none;
    font-weight: bold;
}
nav a:hover {
    text-decoration: underline;
}
main {
    padding: 20px;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}
th, td {
    border: 1px solid #ccc;
    padding: 10px;
    text-align: left;
}
th {
    background-color: #ecf0f1;
}
.floating-buttons {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
}
.floating-buttons a {
    display: block;
    margin: 10px 0;
    text-decoration: none;
    color: white;
    padding: 12px 20px;
    border-radius: 5px;
    font-weight: bold;
}
.floating-buttons a:first-child { background-color: #25D366; }
.floating-buttons a:last-child { background-color: #007BFF; }