// <a>
a {

  &.a-contrast-color {
    color: @s-main-link-color-hover;

    &:active,
    &:hover,
    &:focus {
      color: @s-main-link-color;
    }
  }
}

// appearance-none
.appearance-none {
  appearance: none;
}

// background image
.bg-img-cover {
  background-position: center;
  background-size: cover;
}
.bg-img-fixed {
  background-attachment: fixed;
  background-size: 100%;
  background-position: center;
  background-repeat: no-repeat;
  transform: translate3d(0,0,0);

  @media (max-width: @l-screen-max) {
    background-attachment: scroll;
    background-size: cover;
  }
}
.bg-img-no-repeat {
  background-repeat: no-repeat;
}

// background position
.bg-pos-bottom {
  background-position: bottom;
}
.bg-pos-center {
  background-position: center;
}
.bg-pos-left {
  background-position: left;
}
.bg-pos-right {
  background-position: right;
}
.bg-pos-top {
  background-position: top;
}

// display
.dis-block {
  display: block;
}
.dis-inline-block {
  display: inline-block;
}
.dis-table {
  display: table;
}
.dis-table-row {
  display: table-row;
}
.dis-table-cell {
  display: table-cell;
}

// font famyly
.ff-body {
  font-family: @s-body-font-family;
}
.ff-heading {
  font-family: @s-headings-font-family;
}

// inline-block-clear
.inline-block-clear {
  .line;
}

// img
.img-liquid {
  max-width: 100%;
}

// overflow
.ovf-auto {
  overflow: auto;
}
.ovf-hidden {
  overflow: hidden;
}
.ovf-visible {
  overflow: visible;
}

// position
.pos-relative {
  position: relative;
}

// table
.table-liquid {
  overflow: auto;
  max-width: 100%;
}

// Transition
.trans-ease {
  .mix-transition(all, .2s, ease);
}
.trans-linear {
  .mix-transition(all, .2s, linear);
}

// user select
.user-select-none {
  -webkit-touch-callout: none;
  user-select: none;
}

// White space
.ws-normal {
  white-space: normal;
}
.ws-nowrap {
  white-space: nowrap;
}
.ws-pre-line {
  white-space: pre-line;
}

// Width & height
.h-50 {
  height: 50%;
}
.w-50 {
  width: 50%;
}
.h-100 {
  height: 100%;
}
.w-100 {
  width: 100%;
}
.vh-50 {
  height: 50vh;
}
.vw-50 {
  width: 50vw;
}
.vh-100 {
  height: 100vh;
}
.vw-100 {
  width: 100vw;
}

// z-index
each(range(1, 5), .(@loop) {
  .z-index-@{loop} {
    z-index: @loop;
  }
})