* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif, sans-serif;
/*    font-family: 'Franklin Gothic', 'Arial Narrow', Arial, sans-serif*/
}
body {
    
    /*background-color: blue;*/
}

nav {

}

ul {
    display: flex;
    flex-direction: row;
    list-style-type: none;
    width: 100%;



/*    background-color: brown;*/
}

ul:visited {
/*    color: red;*/
}

li {
    padding: 15px 10px 15px 10px;
    margin: auto;
    font-size: 12px;


/*    background-color: peachpuff;*/
}

a {
    text-decoration: none;
    color: gray;
}

a:hover{
/*    text-decoration: underline;*/
    color: white;
}

a:active {
/*        text-decoration: underline;*/
        color: white;
}

a:visited{

}

.header {
    /*text-shadow: 2px 2px 2px lightgray, 0 0 .5em white, 0 0 0.2em white;*/
    display: flex;
    flex-direction: column;
    text-align: center;
    position: relative;
    font-weight: 600;
    font-size: 36px;
    margin-top: 0px;
    width: 100%;
/*    text-shadow: 3px 3px 3px lightgray, 0 9px .8em white, 0 0 0.2em white;
    color: white;*/

}

.subheader {
    display: flex;
    flex-direction: column;
    text-align: center;
    position: relative;
    font-size: 10px;
    font-weight: 400;
    color: white;
    width: 100%;
    background-color: transparent;
    position: relative;
    border-radius: 0px;
    /*    background-color: aqua;*/
}

.howto {
    display: flex;
    flex-direction: column;
    text-align: center;
    position: relative;
    font-size: 18px;
    font-weight: 600;
    color: white;
    width: 100%;
    background-color: transparent;
    position: relative;
    border-radius: 0px;
    padding-top: 50px;
    padding-bottom: 8px;
    text-shadow: 3px 3px 3px gray, 0 9px .8em gray, 0 0 0.2em gray;
    color: white;
/*    text-shadow: 3px 3px 4px dimgray, 0 2px .5em white, 0 0 0.2em white;*/
    /*    background-color: lightcoral;*/
}



index-container {
/*    width: 80vw;
    background-color: transparent;
    position: relative;
    transform: translate(-50%, -10%);
    top: 50%;
    left: 50%;
    border-radius: 10px;*/

}



.instructions {
    text-align: justify;
    position: relative;
    font-size: 18px;
    font-weight: 400;
    color: white;
    width: 330px;
    background-color: transparent;
    position: relative;
    transform: translate(-50%, 0%);
    left: 50%;
    border-radius: 0px;
    padding: 18px 0px 18px 0px;
    font-weight: 600;
/*    box-shadow: 5px 10px 20px rgba(0, 0, 0, 0.15);*/

    /*border-bottom: solid thin;
    border-bottom-color: gray;
    border-top: solid thin;
    border-top-color: gray;
    border-left: none;
    border-right: none;*/



    /*    background-color: yellow;*/
}


.principles {
    style = color: white;
/*    text-shadow: 3px 3px 4px lightgray, 0 2px .5em black, 0 0 0.2em white;*/
    text-shadow: 3px 3px 3px lightgray, 0 9px .8em lightgray, 0 0 0.2em lightgray;
    font-weight: 600;
}

.details {
    
    text-align: justify;
    position: relative;
    font-size: 12px;
    font-weight: 400;
    color: white;
    width: 330px;
    background-color: transparent;
    position: relative;
    transform: translate(-50%, 0%);
    left: 50%;
    border-radius: 0px;
    padding: 8px 0px;
    /*    background-color: green;*/
}

.gifs {
    display: flex;
    flex-direction: row;
    width: 330px;
    align-items: center;
    position: relative;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.gif {
    text-align: center;
}

button {
    background-color: #000000;
    color: #ffffff;
    border: none;
    padding: 8px 24px;
    border-radius: 5px;
    font-size: 18px;
    box-shadow: 5px 10px 20px rgba(0, 0, 0, 0.35);
}

.play {
    text-align: center;
    position: relative;
    font-size: 20px;
    font-weight: 600;
    color: white;
    width: 100%;
    padding-top: 30px;



/*    background-color: purple;*/
}

.footer {
/*    display: flex;
    flex-direction: column;*/
    text-align: center;
    position: absolute;
    bottom: 10px;
    font-size: 10px;
    font-weight: 400;
    color: gray;
    width: 100%;
    background-color: transparent;
    border-radius: 0px;
    /*    background-color: aqua;*/
}

.footer-relative {
    /*    display: flex;
    flex-direction: column;*/
    text-align: center;
    position: relative;
    bottom: 10px;
    font-size: 10px;
    font-weight: 400;
    color: gray;
    width: 100%;
    background-color: transparent;
    border-radius: 0px;
    /*    background-color: aqua;*/
}