body{
    font-family: Arial, Helvetica, sans-serif;
    display: flex;
    justify-content: center;
    padding-top: 30px;
}

.container{
    width: 600px;
    height: 280px;
    border: 2px solid #5b87c6;
    position: relative;
    overflow: hidden;
    user-select: none;
}

.circle{
    width: 90px;
    height: 90px;
    background-color: #00ffff;
    border-radius: 50%;
    position: absolute;
    top: 20px;
    left: 20px;
    cursor: pointer;
}

.circle:active{
    cursor: grabbing;
}