#EnglishContainer 
{
    position: fixed;
    width: calc(100% - 100px);
    height: 100vh;
    z-index:1; 
    pointer-events:none;
}
#EnglishContainer > div 
{
    position: absolute;
    width: 50px;
    height: 50px;
    
    /* We use the following properties to apply the fade and drop animations to each English.
       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 EnglishContainer div. In other words, it matches the 'img' elements
   inside the EnglishDivs which are created in the createAEnglish() function.
*/
#EnglishContainer > div > img {
     position: absolute;
     width: 50px;
     height: 50px;

    /* We use the following properties to adjust the clockwiseSpin or counterclockwiseSpinAndFlip
       animations on each English.
       The createAEnglish function in the English.js file determines whether a English 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 English towards the very end of the animation */
@-webkit-keyframes fade
{
    /* Show a English while into or below 95 percent of the animation and hide it, otherwise */
    0%   { opacity: 1; }
    95%  { opacity: 1; }
    100% { opacity: 0; }
}


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

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


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