/* The slider itself */
.slider {
    -webkit-appearance: none; /* Override default CSS styles */
    width: 100%; /* Full-width */
    height: 25px; /* Specified height */
    background: #808080; /* Grey background */
    outline: none; /* Remove outline */
    opacity: 0.5; /* Set transparency (for mouse-over effects on hover) */
    -webkit-transition: .2s; /* 0.2 seconds transition on hover */
    transition: opacity .2s;
}

/* Mouse-over effects */
.slider:hover {
    opacity: 1; /* Fully shown on mouse-over */
}

/* The slider handle (use -webkit- (Chrome, Opera, Safari, Edge) and -moz- (Firefox) to override default look) */
.slider::-webkit-slider-thumb {
    -webkit-appearance: none; /* Override default look */
    width: 25px; /* Set a specific slider handle width */
    height: 25px; /* Slider handle height */
    background: #ffffff; /* Green background */
    cursor: pointer; /* Cursor on hover */
}