body, html {
    width: 100%;
    height: 100%;
    margin: 0;
    overflow: hidden;
}

#app {
    width: 100%;
    height: 100%;
    position: relative;
}

.window {
    position: absolute;
    width: 300px;
    height: 200px;
    border: 1px solid #ccc;
    box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.1);
}

.window-header {
    background: #f1f1f1;
    padding: 5px;
    cursor: move;
    display: flex;
    justify-content: space-between;
}

.window-title {
    font-weight: bold;
}

.window-close {
    background: red;
    color: white;
    border: none;
    cursor: pointer;
}

.window-content {
    height: calc(100% - 30px); /* Adjust for header height */
    border-top: 1px solid #ccc;
}