:root {
    --duration: 5s;

    --bg-color: #222;
}

body,
html {
    height: 100%;
    overflow-x: hidden;
}

body {
    background-color: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: Arial, Helvetica, sans-serif;
}

input {
    cursor: pointer;
}

.container {
    height: 300px;
    width: 300px;
}

.slidecontainer {
    width: 100%;
}

.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 15px;
    outline: none;
    -webkit-transition: 0.2s;
    transition: opacity 0.2s;
    border-radius: 10px;
    overflow: hidden;
    background: lightgray;
}

.slider:hover {
    opacity: 1;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 15px;
    height: 15px;
    background: white;
    cursor: pointer;
    position: relative;
    border-radius: 100%;
    box-shadow: 0px 0px 20px 5px #00000055, -500px 0 0 495px #cb1db4;
}

.slider::-moz-range-thumb {
    width: 25px;
    height: 25px;
    background: white;
    cursor: pointer;
    position: relative;
    border-radius: 100%;
    box-shadow: 0px 0px 20px 5px #00000055, -500px 0 0 495px #cb1db4;
}