body {
    font-family: Arial, sans-serif;
    font-size: 18px;
}

header {
    background-color: #222;
    color: #fff;
    padding: 10px 30px;
}

nav ul {
    list-style-type: none;
    padding: 0;
}

nav ul li {
    display: inline;
    margin-right: 10px;
}

a {
    color: #fff;
    text-decoration: none;
    font-weight: 700;
    padding: 10px 15px;
    background-color: #007bff;
    border-radius: 10px;
    border: 3px solid #007bff;
}

a.develop {
    background-color: #1d814f;
    border: 3px solid #1d814f;
}

a:hover, a.active {
    border: 3px solid #67b0ff;
}

a.develop:hover, a.develop.active {
    border: 3px solid #5eaf80;
}

section {
    padding: 20px;
}

.alert-info {
    border-color: #007bff;
    border-width: 1px;
    border-style: solid;
    border-radius: 10px;
    background-color: #b0c5ff;
    padding: 20px;
}

button {
    background-color: #007bff;
    border-radius: 10px;
    color: #fff;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}