* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    border: 1px solid red;
}

body {
    display: flex;
    min-height: 100vh;
    justify-content: center;
    align-items: center;
}

.container {
    height: 500px;
    width: 500px;
    position: relative;
    background-color: lemonchiffon;
}

.cursor {
    position: absolute;
    height: 20px;
    width:20px;
    background: red;
    display: none;
    pointer-events: none;
    border-radius: 50%;
}