body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background-color: #34495e;
    padding: 1em;
    text-align: center;
    color: white;
}

nav {
    background-color: #333;
    color: white;
    padding: 1em;
    text-align: center;
}

nav a {
    color: white;
    margin: 0 1em;
    text-decoration: none;
}

section {
    padding: 2em;
}
#welcome {
    text-align: center;
}

#welcome img {
    display: block;
    margin: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    padding: 10px;
    border: 1px solid #ddd;
    text-align: left;
}

th {
    background-color: #f2f2f2;
}

tbody tr:nth-child(even) {
    background-color: #f9f9f9;
}

tbody tr:hover {
    background-color: #f0f0f0;
}
footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 1em;
    position:fixed;
    bottom: 0;
    width: 100%;
}