html input[type="range"] {
    outline: 0;
    border: 0;
    border-radius: 500px;
    width: 400px;
    max-width: 100%;
    margin: 24px 0 16px;
    -webkit-transition: box-shadow 0.2s ease-in-out;
    transition: box-shadow 0.2s ease-in-out;
}
@media screen and (-webkit-min-device-pixel-ratio: 0) {
    html input[type="range"] {
        overflow: hidden;
        height: 40px;
        -webkit-appearance: none;
        background-color: #ddd;
    }
    html input[type="range"]::-webkit-slider-runnable-track {
        height: 40px;
        -webkit-appearance: none;
        color: #444;
        -webkit-transition: box-shadow 0.2s ease-in-out;
        transition: box-shadow 0.2s ease-in-out;
    }
    html input[type="range"]::-webkit-slider-thumb {
        width: 40px;
        -webkit-appearance: none;
        height: 40px;
        cursor: ew-resize;
        background: #fff;
        box-shadow: -340px 0 0 320px #1597ff, inset 0 0 0 40px #1597ff;
        border-radius: 50%;
        -webkit-transition: box-shadow 0.2s ease-in-out;
        transition: box-shadow 0.2s ease-in-out;
        position: relative;
    }
    html input[type="range"]:active::-webkit-slider-thumb {
        background: #fff;
        box-shadow: -340px 0 0 320px #1597ff, inset 0 0 0 3px #1597ff;
    }
}
html input[type="range"]::-moz-range-progress {
    background-color: #43e5f7;
}
html input[type="range"]::-moz-range-track {
    background-color: #9a905d;
}
html input[type="range"]::-ms-fill-lower {
    background-color: #43e5f7;
}
html input[type="range"]::-ms-fill-upper {
    background-color: #9a905d;
}

#h4-container {
    width: 400px;
    max-width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
    position: relative;
}
#h4-container #h4-subcontainer {
    width: 100%;
    position: relative;
}
#h4-container #h4-subcontainer h4 {
    display: -webkit-box;
    display: flex;
    -webkit-box-align: center;
    align-items: center;
    -webkit-box-pack: center;
    justify-content: center;
    position: absolute;
    top: 0;
    width: 40px;
    height: 40px;
    color: #fff !important;
    font-size: 12px;
    -webkit-transform-origin: center -10px;
    transform-origin: center -10px;
    -webkit-transform: translateX(-50%);
    transform: translateX(-50%);
    -webkit-transition: margin-top 0.15s ease-in-out, opacity 0.15s ease-in-out;
    transition: margin-top 0.15s ease-in-out, opacity 0.15s ease-in-out;
}
#h4-container #h4-subcontainer h4 span {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-color: #1597ff;
    border-radius: 0 50% 50% 50%;
    -webkit-transform: rotate(45deg);
    transform: rotate(45deg);
    z-index: -1;
}

input:not(:active) + #h4-container h4 {
    opacity: 0;
    margin-top: -50px;
    pointer-events: none;
}