/* ===========================
   Common Styles
=========================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

body {
    background: #f5f7fb;
    color: #333;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    cursor: pointer;
    transition: 0.3s;
}

button:hover {
    opacity: 0.9;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
}

.hidden {
    display: none;
}

.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}