#PoppiesContainer 
{
    position: fixed;
    width: calc(100% - 100px);
    height: 100vh;
    z-index:1; 
    pointer-events:none;
}
#PoppiesContainer > div 
{
    position: absolute;
    width: 50px;
    height: 50px;
    
    /* We use the following properties to apply the fade and drop animations to each Poppies.
       Each of these properties takes two values. These values respectively match a setting
       for fade and drop.
    */
    -webkit-animation-iteration-count: infinite, infinite;
    -webkit-animation-direction: normal, normal;
    -webkit-animation-timing-function: linear, ease-in;
}

/* This CSS rule is applied to all img elements directly inside div elements which are
   directly inside the PoppiesContainer div. In other words, it matches the 'img' elements
   inside the PoppiesDivs which are created in the createAPoppies() function.
*/
#PoppiesContainer > div > img {
     position: absolute;
     width: 50px;
     height: 50px;

    /* We use the following properties to adjust the clockwiseSpin or counterclockwiseSpinAndFlip
       animations on each Poppies.
       The createAPoppies function in the Poppies.js file determines whether a Poppies has the 
       clockwiseSpin or counterclockwiseSpinAndFlip animation.
    */
     -webkit-animation-iteration-count: infinite;
     -webkit-animation-direction: alternate;
     -webkit-animation-timing-function: ease-in-out;
     -webkit-transform-origin: 30% -100%;
}


/* Hides a Poppies towards the very end of the animation */
@-webkit-keyframes fade
{
    /* Show a Poppies while into or below 95 percent of the animation and hide it, otherwise */
    0%   { opacity: 1; }
    95%  { opacity: 1; }
    100% { opacity: 0; }
}


/* Makes a Poppies fall from -300 to 600 pixels in the y-axis */
@-webkit-keyframes drop
{
    /* Move a Poppies to -300 pixels in the y-axis at the start of the animation */
    0%   { -webkit-transform: translate(-50px, -50px); }
    /* Move a Poppies to 600 pixels in the y-axis at the end of the animation */
    100% { -webkit-transform: translate(0px, 100vh); }
}

/* Rotates a Poppies from -50 to 50 degrees in 2D space */
@-webkit-keyframes clockwiseSpin
{
    /* Rotate a Poppies by -50 degrees in 2D space at the start of the animation */
    0%   { -webkit-transform: rotate(-50deg); }
    /*  Rotate a Poppies by 50 degrees in 2D space at the end of the animation */
    100% { -webkit-transform: rotate(50deg); }
}


/* Flips a Poppies and rotates it from 50 to -50 degrees in 2D space */
@-webkit-keyframes counterclockwiseSpinAndFlip 
{
    /* Flip a Poppies and rotate it by 50 degrees in 2D space at the start of the animation */
    0%   { -webkit-transform: scale(-1, 1) rotate(50deg); }
    /* Flip a Poppies and rotate it by -50 degrees in 2D space at the end of the animation */
    100% { -webkit-transform: scale(-1, 1) rotate(-50deg); }
}