Edit in JSFiddle

body {
    padding: 30px;
}
input[type=range] {
    /*removes default webkit styles*/
    -webkit-appearance: none;

    padding: 8px 5px;
    background: transparent;
    transition: border 0.2s linear, box-shadow 0.2s linear;
    
    /*required for proper track sizing in FF*/
    width: 100%;
}

input[type=range]:active {
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
}

input[type=range]:focus {
  outline: none;
}

input[type=range]::-webkit-slider-runnable-track {
    width: 100%;
    height: 5px;
    background: #5bc0de;
    border: none;
    border-radius: 10px;
}
input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    border: none;
    display: block;
    height: 16px;
    width: 16px;
    border-radius: 50%;
    border: 1px solid #ddd;
    background: #fafafa;
    cursor: pointer;
    margin-top: -5px;
}
input[type=range]::-webkit-slider-thumb:hover {
  background-position: 50% 50%;
}

input[type=range]:focus::-webkit-slider-runnable-track {
    background: #5bc0de;
}

input[type=range]::-moz-range-track {
    width: 100%;
    height: 5px;
    background: #5bc0de;
    border: none;
    border-radius: 3px;
}
input[type=range]::-moz-range-thumb {
    border: none;
    display: block;
    height: 16px;
    width: 16px;
    border-radius: 50%;
    border: 1px solid #ddd;
    background: #fafafa;
    cursor: pointer;
    margin-top: -5px;
}

/*hide the outline behind the border*/
input[type=range]:-moz-focusring {
    outline: 1px solid white;
    outline-offset: -1px;
}

input[type=range]::-ms-track {
    width: 100%;
    height: 5px;
    background: transparent; /* Hides the slider so custom styles can be added */
    border-color: transparent;
    border-width: 7px 0;
    color: transparent;
}
input[type=range]::-ms-fill-lower {
    background:  #5bc0de;
    border-radius: 10px;
}
input[type=range]::-ms-fill-upper {
    background:  #5bc0de;
    border-radius: 10px;
}
input[type=range]::-ms-thumb {
    border: none;
    height: 16px;
    width: 16px;
    border-radius: 50%;
    border: 1px solid #ddd;
    background: #fafafa;
}

<input type="range" name="my-range" title="custom input range" />