github.com/mithrandie/csvq@v1.18.1/docs/_sass/components/forms/_input-fields.scss

/* Text Inputs + Textarea
   ========================================================================== */

/* Style Placeholders */

::-webkit-input-placeholder {
  color: $placeholder-text-color;
}

:-moz-placeholder { /* Firefox 18- */
  color: $placeholder-text-color;
}

::-moz-placeholder {  /* Firefox 19+ */
  color: $placeholder-text-color;
}

:-ms-input-placeholder {
  color: $placeholder-text-color;
}

/* Text inputs */

input:not([type]),
input[type=text],
input[type=password],
input[type=email],
input[type=url],
input[type=time],
input[type=date],
input[type=datetime],
input[type=datetime-local],
input[type=tel],
input[type=number],
input[type=search],
textarea.materialize-textarea {

  // General Styles
  background-color: transparent;
  border: none;
  border-bottom: $input-border;
  border-radius: 0;
  outline: none;
  height: $input-height;
  width: 100%;
  font-size: $input-font-size;
  margin: $input-margin;
  padding: $input-padding;
  box-shadow: none;
  box-sizing: content-box;
  transition: $input-transition;

  // Disabled input style
  &:disabled,
  &[readonly="readonly"] {
    color: $input-disabled-color;
    border-bottom: $input-disabled-border;
  }

  // Disabled label style
  &:disabled+label,
  &[readonly="readonly"]+label {
    color: $input-disabled-color;
  }

  // Focused input style
  &:focus:not([readonly]) {
    border-bottom: 1px solid $input-focus-color;
    box-shadow: 0 1px 0 0 $input-focus-color;
  }

  // Focused label style
  &:focus:not([readonly])+label {
    color: $input-focus-color;
  }

  // Valid Input Style
  &.valid,
  &:focus.valid {
    border-bottom: 1px solid $input-success-color;
    box-shadow: 0 1px 0 0 $input-success-color;
  }

  // Custom Success Message
  &.valid + label:after,
  &:focus.valid + label:after {
    content: attr(data-success);
    color: $input-success-color;
    opacity: 1;
  }

  // Invalid Input Style
  &.invalid,
  &:focus.invalid {
    border-bottom: $input-invalid-border;
    box-shadow: 0 1px 0 0 $input-error-color;
  }

  // Custom Error message
  &.invalid + label:after,
  &:focus.invalid + label:after {
    content: attr(data-error);
    color: $input-error-color;
    opacity: 1;
  }

  // Full width label when using validate for error messages
  &.validate + label {
    width: 100%;
    pointer-events: none;
  }

  // Form Message Shared Styles
  & + label:after {
    display: block;
    content: "";
    position: absolute;
    top: 60px;
    opacity: 0;
    transition: .2s opacity ease-out, .2s color ease-out;
  }
}

// Styling for input field wrapper
.input-field {
  // Inline styles
  &.inline {
    display: inline-block;
    vertical-align: middle;
    margin-left: 5px;

    input,
    .select-dropdown {
      margin-bottom: 1rem;
    }
  }

  // Gutter spacing
  &.col {
    label {
      left: $gutter-width / 2;
    }

    .prefix ~ label,
    .prefix ~ .validate ~ label {
      width: calc(100% - 3rem - #{$gutter-width});
    }
  }

  position: relative;
  margin-top: 1rem;

  label {
    color: $input-border-color;
    position: absolute;
    top: 0.8rem;
    left: 0;
    font-size: 1rem;
    cursor: text;
    transition: .2s ease-out;
    text-align: initial;

    &:not(.label-icon).active {
      font-size: $label-font-size;
      transform: translateY(-140%);
    }
  }

  // Prefix Icons
  .prefix {
    position: absolute;
    width: $input-height;
    font-size: 2rem;
    transition: color .2s;

    &.active { color: $input-focus-color; }
  }

  .prefix ~ input,
  .prefix ~ textarea,
  .prefix ~ label,
  .prefix ~ .validate ~ label,
  .prefix ~ .autocomplete-content {
    margin-left: 3rem;
    width: 92%;
    width: calc(100% - 3rem);
  }

  .prefix ~ label { margin-left: 3rem; }

  @media #{$medium-and-down} {
    .prefix ~ input {
      width: 86%;
      width: calc(100% - 3rem);
    }
  }

  @media #{$small-and-down} {
    .prefix ~ input {
      width: 80%;
      width: calc(100% - 3rem);
    }
  }
}


/* Search Field */

.input-field input[type=search] {
  display: block;
  line-height: inherit;
  padding-left: 4rem;
  width: calc(100% - 4rem);

  &:focus {
    background-color: $input-background;
    border: 0;
    box-shadow: none;
    color: #444;

    & + label i,
    & ~ .mdi-navigation-close,
    & ~ .material-icons {
      color: #444;
    }
  }

  & + label {
    left: 1rem;
  }

  & ~ .mdi-navigation-close,
  & ~ .material-icons {
    position: absolute;
    top: 0;
    right: 1rem;
    color: transparent;
    cursor: pointer;
    font-size: 2rem;
    transition: .3s color;
  }
}


/* Textarea */

// Default textarea
textarea {
  width: 100%;
  height: $input-height;
  background-color: transparent;

  &.materialize-textarea {
    overflow-y: hidden; /* prevents scroll bar flash */
    padding: .8rem 0 1.6rem 0; /* prevents text jump on Enter keypress */
    resize: none;
    min-height: $input-height;
  }
}

// For textarea autoresize
.hiddendiv {
  display: none;
  white-space: pre-wrap;
  word-wrap: break-word;
  overflow-wrap: break-word; /* future version of deprecated 'word-wrap' */
  padding-top: 1.2rem; /* prevents text jump on Enter keypress */

  // Reduces repaints
  position: absolute;
  top: 0;
}


/* Autocomplete */
.autocomplete-content {
  margin-top: -1 * $input-margin-bottom;
  display: block;
  opacity: 1;
  position: static;

  li {
    .highlight { color: #444; }

    img {
      height: $dropdown-item-height - 10;
      width: $dropdown-item-height - 10;
      margin: 5px 15px;
    }
  }
}