danbooru/app/assets/stylesheets/common/forms.css.scss

// taken from https://github.com/jlong/sass-twitter-bootstrap/blob/master/lib/forms.scss

@import "000_vars.css.scss";

button,
input,
select,
textarea {
  font-size: 100%;
  margin: 0;
  vertical-align: baseline;
  *vertical-align: middle;
}
button,
input {
  line-height: normal; // FF3/4 have !important on line-height in UA stylesheet
  *overflow: visible; // Inner spacing ie IE6/7
}
button::-moz-focus-inner,
input::-moz-focus-inner { // Inner padding and border oddities in FF3/4
  border: 0;
  padding: 0;
}
button,
input[type="button"],
input[type="reset"],
input[type="submit"] {
  cursor: pointer; // Cursors on all buttons applied consistently
  -webkit-appearance: button; // Style clicable inputs in iOS
}
input[type="search"] { // Appearance in Safari/Chrome
  -webkit-appearance: textfield;
  -webkit-box-sizing: content-box;
     -moz-box-sizing: content-box;
          box-sizing: content-box;
}
input[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none; // Inner-padding issues in Chrome OSX, Safari 5
}
textarea {
  overflow: auto; // Remove vertical scrollbar in IE6-9
  vertical-align: top; // Readability and alignment cross-browser
}

input[type=checkbox],
input[type=radio] {
  cursor: pointer;
}

input,
textarea,
select {
  display: inline-block;
  height: $baseline;
  padding: 4px;
  font-size: $basefont;
  line-height: $baseline;
  border: 1px solid #ccc;
  @include border-radius(3px);
}

input,
textarea {
  width: 210px;
}

select {
  padding: initial;
}

input[type=checkbox],
input[type=radio] {
  width: auto;
  height: auto;
  padding: 0;
  margin: 3px 0;
  *margin-top: 0; /* IE6-7 */
  line-height: normal;
  border: none;
}

input[type=file] {
  background-color: white;
  padding: initial;
  border: initial;
  line-height: initial;
  @include box-shadow(none);
}

input[type=button],
input[type=reset],
input[type=submit] {
  width: auto;
  height: auto;
}

select,
input[type=file] {
  height: $baseline * 1.5; // In IE7, the height of the select element cannot be changed by height, only font-size
  *height: auto; // Reset for IE7
  line-height: $baseline * 1.5;
  *margin-top: 4px; /* For IE7, add top margin to align select with labels */
}

textarea {
  height: auto;
}

input,
textarea {
  $transition: border linear .2s, box-shadow linear .2s;
  @include transition($transition);
  @include box-shadow(inset 0 1px 3px rgba(0,0,0,.1));
}
input:focus,
textarea:focus {
  outline: 0;
  border-color: rgba(82,168,236,.8);
  $shadow: inset 0 1px 3px rgba(0,0,0,.1), 0 0 8px rgba(82,168,236,.6);
  @include box-shadow($shadow);
}
input[type=file]:focus,
input[type=checkbox]:focus,
select:focus {
  @include box-shadow(none); // override for file inputs
  outline: 1px dotted #666; // Select elements don't get box-shadow styles, so instead we do outline
}

// Base .btn styles
button, input[type="submit"], a.btn {
  // Button Base
  cursor: pointer;
  display: inline-block;
  @include vertical-three-colors-gradient(#fff, #fff, 25%, darken(#fff, 10%));
  padding: 3px 10px 3px;
  text-shadow: 0 1px 1px rgba(255,255,255,.75);
  color: black;
  font-size: $basefont;
  line-height: normal;
  border: 1px solid #ccc;
  border-bottom-color: #bbb;
  @include border-radius(4px);
  $shadow: inset 0 1px 0 rgba(255,255,255,.2), 0 1px 2px rgba(0,0,0,.05);
  @include box-shadow($shadow);

  &:hover {
    background-position: 0 -15px;
    color: #333;
    text-decoration: none;
  }

  // Focus state for keyboard and accessibility
  &:focus {
    outline: 1px dotted #666;
  }

  // Active and Disabled states
  &.active,
  &:active {
    $shadow: inset 0 2px 4px rgba(0,0,0,.25), 0 1px 2px rgba(0,0,0,.05);
    @include box-shadow($shadow);
  }
  
  &.large {
    font-size: $basefont + 15%;
    line-height: normal;
    padding: 9px 14px 9px;
    @include border-radius(6px);
  }
}
// Super jank hack for removing border-radius from IE9 so we can keep filter gradients on alerts and buttons
:root .alert-message,
:root .btn {
  border-radius: 0 \0;
}

// Help Firefox not be a jerk about adding extra padding to buttons
button,
input[type=submit] {
  &::-moz-focus-inner {
    padding: 0;
    border: 0;
  }
}