body {
    background-color: #008080;
    color: #000;
    font-family: Tahoma, sans-serif;
    margin: 0;
    padding: 0;
    position: relative;
}
.startup-screen {
    background-color: #000080;
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}
.startup-logo {
    font-size: 32px;
    margin-bottom: 20px;
}
.startup-text {
    font-size: 18px;
    margin-bottom: 10px;
}
.progress-bar {
    width: 80%;
    height: 20px;
    background-color: #ffffff;
    border: 1px solid #000;
    margin-top: 10px;
    position: relative;
}
.progress {
    width: 0;
    height: 100%;
    background-color: #00ff00;
    position: absolute;
    left: 0;
    top: 0;
}
.taskbar {
    background-color: #c0c0c0;
    height: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 10px;
    position: fixed;
    bottom: 0;
    width: 100%;
}
.start-button {
    background-color: #c0c0c0;
    border: 1px solid #000;
    padding: 5px 10px;
    cursor: pointer;
}
.start-button:hover {
    background-color: #fff;
}
.start-menu {
    background-color: #c0c0c0;
    border: 1px solid #000;
    width: 200px;
    position: absolute;
    bottom: 40px;
    left: 10px;
    display: none;
    z-index: 1000;
}
.start-menu-item {
    padding: 10px;
    cursor: pointer;
}
.start-menu-item:hover {
    background-color: #fff;
}
.desktop-icon {
    width: 50px;
    height: 50px;
    position: absolute;
    cursor: pointer;
}
.desktop-icon img {
    width: 100%;
    height: auto;
}
.desktop-icon-label {
    text-align: center;
    font-size: 12px;
    color: #fff;
}
.window {
    background-color: #fff;
    border: 2px solid #000;
    width: 400px;
    height: 300px;
    position: absolute;
    top: 50px;
    left: 50px;
    box-shadow: 5px 5px #888;
    cursor: move;
    display: none; /* Initially hide the window */
    z-index: 0;
}
.window-header {
    background-color: #000080;
    color: #fff;
    padding: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: move;
}
.window-content {
    padding: 10px;
}
.button {
    background-color: #c0c0c0;
    border: 1px solid #000;
    padding: 5px 10px;
    cursor: pointer;
}
.button:hover {
    background-color: #fff;
}
.shutdown-screen {
    background-color: #000080;
    color: #fff;
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}
.shutdown-text {
    font-size: 24px;
}
.window.active {
    z-index: 1000;
}
.window-header.active {
    background-color: #0000ff;
}