body {
    margin: 0;
    padding: 0;
    background: #f0f0f0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
#container {
    position: relative;
    width: 600px;
    height: 400px;
    background: rgb(92, 205, 227);
    border: 2px solid black;
    border-radius: 25px;
}