style.css

body {
    margin: 0;
    overflow: hidden;
    background-color: #272727;
}

.main {
    opacity: 1;
}

.main.disabled {
    opacity: 0.4;
}

.navbar {
    opacity: 1;
}

.navbar.disabled {
    opacity: 0.4;
}


#c {
    margin: 0;
    overflow: hidden   
}

input[type="range"] {
    --webkit-appearance: none;
    background-color: #bdc3c7;
    height: 5px;
    border-radius: 5px;
}
input[type="range"]::-webkit-slider-thumb {
    --webkit-appearance: none;
    background-color: #e74c3c;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid white;
    cursor: pointer;
    transition: .3s ease-in-out;
}​
input[type="range"]::-webkit-slider-thumb:hover {
    background-color: white;
    border: 2px solid #e74c3c;
}
input[type="range"]::-webkit-slider-thumb:active {
    transform: scale(1.3);
}

#info:hover {
    cursor: pointer;
}

.info-wrapper {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
}

.info-wrapper.disabled {
    display: none;
}

.info {
    overflow-y: scroll;
    display: block;
    justify-content: center;
    z-index: 100;
    background: #fff;
    border-radius: 5px;
    border: 2px solid #FF652F;
    padding: 1rem;

}

.info-close {
    position: relative;
    float: right;
}

.info-close:hover {
    cursor: pointer;
}