body {
    font-family: Arial, sans-serif;
    text-align: center;
    background-color: #121212;
    color: white;
}

.container {
    width: 80%;
    margin: auto;
}

.api-section {
    margin-bottom: 20px;
}

input {
    padding: 10px;
    margin: 5px;
    width: 200px;
    border-radius: 5px;
    border: none;
}

button {
    padding: 10px 15px;
    margin: 5px;
    border: none;
    cursor: pointer;
    font-size: 16px;
    border-radius: 5px;
}

#buyBtn { background-color: green; }
#sellBtn { background-color: red; }
#holdBtn { background-color: yellow; color: black; }