.difficulty__easy {
    display: block;
    height: 30px;
    width: 30px;
    margin: 0 auto;
    border-radius: 30px;
    background: chartreuse;
}

.difficulty__intermediate {
    display: block;
    height: 30px;
    width: 30px;
    margin: 0 auto;
    background: blue;
}

.difficulty__hard-outer {
    height: 30px;
    margin: 0 auto;
}

.difficulty__hard-inner {
    display: block;
    height: 27px;
    width: 27px;
    margin: 0 auto;
    background-color: black;
    transform: rotate(45deg);
}

.difficulty__impossible-outer {
    position: relative;
    height: 30px;
    width: 30px;
    margin: 0px auto;
}
.difficulty__impossible-inner {
    width: 0px;
    height: 0px;
    border-left: 20px solid transparent;
    border-right: 20px solid transparent;
    border-bottom: 35px solid rgb(255, 215, 0);
    position: absolute;
}
.difficulty__impossible-inner-inner {
    font-size: 2em;
    position: absolute;
    left: -3px;
    top: 5px;
}