body {
    margin: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #f0f0f5;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", "Arial", sans-serif;
    position: relative;
}

.window {
    position: absolute;
    width: 500px;
    height: 300px;
    border-radius: 10px;
    background-color: #fff;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#main-window {
    width: 70%;
    height: 80%;
    z-index: 1;
}

.title-bar {
    background-color: #e0e0e0;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: move;
    user-select: none;
}

.buttons {
    display: flex;
    gap: 5px;
}

.button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.red { background-color: #ff5f57; }
.yellow { background-color: #ffbd2e; }
.green { background-color: #28c840; }

.window-title {
    flex-grow: 1;
    text-align: center;
    font-weight: bold;
}

.content {
    flex-grow: 1;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.content p {
    font-size: 18px;
    line-height: 1.6;
}

a {
    color: #007aff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.resize-handle {
    width: 20px;
    height: 20px;
    background-color: rgba(0, 0, 0, 0.1);
    position: absolute;
    right: 0;
    bottom: 0;
    cursor: se-resize;
    border-bottom-right-radius: 10px;
}

h1 {
    margin: 0;
    font-size: 3em;
}

main {
    padding: 20px;
}

section {
    margin-bottom: 10px;
    padding: 15px;
}

h2 {
    color: #4CAF50;
    border-bottom: 2px solid #4CAF50;
    padding-bottom: 5px;
}

p {
    line-height: 1.6;
}