*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
    height: 100vh;
}


.cursor {
    width: 20px;
    height: 20px;
    border: 1px solid white;
    border-radius: 50%;
    position: absolute;
    transition-duration: 200ms;
    transition-timing-function: ease-out;
    animation: cursorAnim .5s infinite alternate;
    pointer-events: none;
}

.cursor::after {
    content: "";
    width: 20px;
    height: 20px;
    position: absolute;
    border: 8px solid gray;
    border-radius: 50%;
    opacity: .5;
    top: -8px;
    left: -8px;
    animation: cursorAnim2 .5s infinite alternate;
}

@keyframes cursorAnim {
    from {
        transform: scale(1);
    }
    to {
        transform: scale(.7);
    }
}

@keyframes cursorAnim2 {
    from {
        transform: scale(1);
    }
    to {
        transform: scale(.4);
    }
}

@keyframes cursorAnim3 {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(3);
    }
    100% {
        transform: scale(1);
        opacity: 0;
    }
}

.expand {
    animation: cursorAnim3 .5s forwards;
    border: 1px solid red;
}


/* ===== Scrollbar CSS ===== */
  /* Firefox */
  * {
    /*scrollbar-width: auto;
    scrollbar-color: darkblue #ffffff;
    border-radius: 15px;*/
  }

  *::-webkit-scrollbar-thumb {
  background-color: red;
  border: 4px solid transparent;
  border-radius: 8px;
  background-clip: padding-box;  
}

  /* Chrome, Edge, and Safari */
  *::-webkit-scrollbar {
    width: 10px;
/*    border-radius: 15px;*/
  }

  *::-webkit-scrollbar-track {
    background: #ffffff;
  }

  *::-webkit-scrollbar-thumb {
    background-color: darkblue;
    
    border: 2px solid #ffffff;
  }