* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background-color: #35424a;
    color: #ffffff;
    padding: 15px 0;
    margin-bottom: 20px;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: #ffffff;
    text-decoration: none;
}

.btn {
    display: inline-block;
    background-color: #e8491d;
    color: #ffffff;
    padding: 10px 15px;
    border: none;
    cursor: pointer;
    text-decoration: none;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

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

table th {
    background-color: #f2f2f2;
}

.error {
    color: #ff0000;
    margin-bottom: 15px;
}

.success {
    color: #008000;
    margin-bottom: 15px;
}

.card {
    background-color: #ffffff;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    padding: 20px;
    margin-bottom: 20px;
}