 {    border-color: rgba(000, 000, 000, 0);    border-bottom-color: #0f0de0;    border-width: 00px;  }  input.thickness::-webkit-slider-thumb:before {    border-color: rgba(000, 000, 000, 0);    border-bottom-color: #0f0de0;    border-width: 00px;  } 