style.css

body {
    overflow:hidden;
    background-color: ghostwhite;
}

p{
    text-align: center;
    color: ghostwhite;
    mix-blend-mode: difference;
    font-size: 24pt;
    font-family: Arial, Helvetica, sans-serif;
    }

#instruction{
    margin-top: 30px;
}

#block {
    position: fixed;
    display: none;
    left: 0; top: 0;
    height: 100%; width: 100%;
    mix-blend-mode: hue;
    background-color: gray;

}

.result{
    color: ghostwhite;
    mix-blend-mode: difference;
    font-size: 10pt;
    position: absolute;
    left: 50%; bottom: 5px;
    transform: translate(-50%, 0);}

#perdido {
    color: black;
    mix-blend-mode: darken;
    font-size: 62pt;
    position: absolute;
    left: 50%; bottom: 0%;
    transform: translate(-50%, -50%);
}

.fundoYin{
    position: fixed;
    left: 0;
    top: 0px;
    height: 50%; width: 100%;
    background-color: rgb(48, 48, 48);}

.fundoYang{
        position: fixed;
        left: 0;
        bottom: 0px;
        height: 50%; width: 100%;
        background-color: ghostwhite;}
.circYin{
    position: absolute;
    overflow: hidden;
    right: 50%; top: 50%;
    transform: translate(0 , -50%);
    height: 780px; width: 780px;
    border-radius: 50%;
    background-color: rgb(48, 48, 48);}
.centroYin{
    position: absolute;
    background-color: ghostwhite;
    height: 170px; width: 170px;
    border-radius: 50%;
    right: 50%; top: 50%;
    transform: translate(50%,-50%);}
.circYang{
    position: absolute;
    overflow: hidden;
    left: 50%; top: 50%;
    transform: translate(0 , -50%);
    height: 780px; width: 780px;
    border-radius: 50%;
    background-color: ghostwhite;}
.centroYang{
    position: absolute;
    background-color: rgb(48, 48, 48);
    height: 170px; width: 170px;
    border-radius: 50%;
    left: 50%; top: 50%;
    transform: translate(-50%,-50%);}

#elemento_esq, #elemento_dir {
    position: absolute;
    left: 50%; top: 50%;
    transform: translate(-100%,-50%);
    
}

#img_esq, #img_dir {
    width: 200%;
}

#botoes {
    position: absolute;
    top: 50%;
    left: 50%;
    margin-right: -50%;
    transform: translate(-50%, -55%);}

.button {
    border: none;
    border-radius: 50%;
    color: ghostwhite;
    height: 100px; width: 100px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;}

.button:hover {
    box-shadow: 0 0 10px lightgray;
    }
.button:focus {
    outline:0 !important;
}

#fogo{
    background-color: rgb(255, 0, 0); /* Green */
    position: relative;
    left: 50%;
    margin-right: -50%;
    transform: translate(-50%);}
#madeira{
    background-color: rgb(0, 204, 44); /* Green */
    margin-right: 111px;
    margin-top: 20px;}
#terra{
    background-color: rgb(128, 77, 0); /* Green */
    margin-left: 111px;}
#agua{
    background-color: rgb(0, 119, 255); /* Green */
    margin-left: 62px;
    margin-right: 49px;
    margin-top: 80px;}
#metal{
    background-color: rgb(104, 104, 104); /* Green */
    margin-right: 62px;
    margin-left: 49px;}