.slider {
    margin: 0.5rem 0;
    -webkit-appearance: none;
    display: inline-block;
    width: 100%;
    height: 25px;
    background: #d3d3d3;
    outline: none;
    opacity: 0.7;
    -webkit-transition: .2s;
    transition: opacity .2s;
}

#slider_value {
    width: 80px;
    height: 80px;
    opacity: 0.7;
    background-color: #d3d3d3;
    color:rgb(214, 59, 59);
    font-weight: bold;
    font-size: 2em;
    transition-property: transform;
    transition-duration: 0.2s;
}
  
.slider:hover {
    opacity: 1;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 25px;
    height: 25px;
    background: rgb(214, 59, 59);
    cursor: pointer;
}

.slider::-moz-range-thumb {
    width: 25px;
    height: 25px;
    background: rgb(214, 59, 59);
    cursor: pointer;
}