water.css/src/parts/_forms.css

button,
input[type="submit"],
input[type="button"],
input[type="checkbox"],
input[type="range"] {
  cursor: pointer;
}

input:not([type="checkbox"]):not([type="radio"]),
select {
  display: block;
}

input,
button,
textarea {
  color: var(--form-text);
  background-color: var(--background);

  font-family: inherit;
  font-size: inherit;

  margin-right: 6px;
  margin-bottom: 6px;
  padding: 10px;

  border: none;
  border-radius: 6px;
  outline: none;
}

input:not([type="checkbox"]):not([type="radio"]),
select,
button,
textarea {
  -webkit-appearance: none;
}

textarea {
  margin-right: 0;
  width: 100%;
  box-sizing: border-box;
  resize: vertical;
}

button,
input[type="submit"],
input[type="button"] {
  padding-right: 30px;
  padding-left: 30px;
}

button:hover,
input[type="submit"]:hover,
input[type="button"]:hover {
  background: var(--button-hover);
}

input:focus,
select:focus,
button:focus,
textarea:focus {
  box-shadow: 0 0 0 2px var(--focus);
}

input[type="checkbox"]:active,
input[type="radio"]:active,
input[type="submit"]:active,
input[type="button"]:active,
input[type="range"]:active,
button:active {
  transform: translateY(2px);
}

input:disabled,
select:disabled,
button:disabled,
textarea:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

::placeholder {
  color: var(--form-placeholder);
}

input[type="range"] {
  -webkit-appearance: none;
  margin: 10px 0;
  background: transparent;
}
input[type="range"]:focus {
  outline: none;
}

input[type="range"]::-webkit-slider-runnable-track {
  width: 100%;
  height: 9.5px;
  transition: 0.2s;
  background: var(--background);
  border-radius: 3px;
}
input[type="range"]::-webkit-slider-thumb {
  box-shadow: 0px 1px 1px #000000, 0px 0px 1px #0d0d0d;
  height: 20px;
  width: 20px;
  border-radius: 50%;
  background: var(--border);
  -webkit-appearance: none;
  margin-top: -7px;
}
input[type="range"]:focus::-webkit-slider-runnable-track {
  background: var(--background);
}
input[type="range"]::-moz-range-track {
  width: 100%;
  height: 9.5px;
  transition: 0.2s;
  background: var(--background);
  border-radius: 3px;
}
input[type="range"]::-moz-range-thumb {
  box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d;
  height: 20px;
  width: 20px;
  border-radius: 50%;
  background: var(--border);
}
input[type="range"]::-ms-track {
  width: 100%;
  height: 9.5px;
  background: transparent;
  border-color: transparent;
  border-width: 16px 0;
  color: transparent;
}
input[type="range"]::-ms-fill-lower {
  background: var(--background);
  border: 0.2px solid #010101;
  border-radius: 3px;
  box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d;
}
input[type="range"]::-ms-fill-upper {
  background: var(--background);
  border: 0.2px solid #010101;
  border-radius: 3px;
  box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d;
}
input[type="range"]::-ms-thumb {
  box-shadow: 1px 1px 1px #000000, 0px 0px 1px #0d0d0d;
  border: 1px solid #000000;
  height: 20px;
  width: 20px;
  border-radius: 50%;
  background: var(--border);
}
input[type="range"]:focus::-ms-fill-lower {
  background: var(--background);
}
input[type="range"]:focus::-ms-fill-upper {
  background: var(--background);
}