*,
*:before,
*:after{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

body{
    display: flex;
    align-items:center;
    justify-content: center;
}

.container{
    width: 670px;
    height: 400px;
    margin: auto;
    position: relative;
    overflow: hidden;
    border-radius: 50px;
    box-shadow: 0px 4px 8px rgba(26, 26, 26, 0.2);
    object-fit: scale-down;
}

img{
    width: 100%;
    height: 100%;
    position: absolute;
    border-radius: 50px;
}

#my-img{
    clip-path: polygon(0 0 , 50% 0, 50% 100%, 0 100%);
}

#slider{
    position: relative;
    -webkit-appearance: none;
    width: calc( 100% + 40px);
    height: 100%;
    margin-left: -20px;
    background-color: transparent;
    outline: none;
}

#slider::-webkit-slider-thumb{
    -webkit-appearance: none;
    height: 40px;
    width: 40px;
    background: rgba(0,51,102,0.6);
    border: 2px solid #FCBA19;
    border-radius: 50%;
    background-size: contain;
    cursor: pointer;
}