body {
    display: flex;
}
body {
    background-color: #f8f9fa;
}

.sidebar {
    width: 250px;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    background-color: #343a40;
    padding-top: 20px;
}
.sidebar ul {
    list-style: none;
    padding: 0;
}
.sidebar ul li {
    padding: 10px;
    text-align: center;
}
.sidebar ul li a {
    color: white;
    text-decoration: none;
    display: block;
}

.sidebar ul li a:hover {
    background-color: #3c4247;
}
.main-content {
    margin-left: 260px;
    padding: 20px;
    width: 100%;
}
.main-content {
    margin-left: 260px;
    padding: 20px;
    width: 100%;
}
.main-content {
    margin-left: 260px;
    padding: 20px;
    width: 100%;
}

.register-container {
    max-width: 400px;
    margin: 50px auto;
    padding: 20px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.footer {
    width: 100%;
}