Materialtube/src/styles/materialize/components/_buttons.scss

// shared styles
.btn,
.btn-flat {
  border: $button-border;
  border-radius: $button-radius;
  display: inline-block;
  height: $button-height;
  line-height: $button-height;
  padding: $button-padding;
  text-transform: uppercase;
  vertical-align: middle;
  -webkit-tap-highlight-color: transparent; // Gets rid of tap active state
}

// Disabled shared style
.btn.disabled,
.btn-floating.disabled,
.btn-large.disabled,
.btn-small.disabled,
.btn-flat.disabled,
.btn:disabled,
.btn-floating:disabled,
.btn-large:disabled,
.btn-small:disabled,
.btn-flat:disabled,
.btn[disabled],
.btn-floating[disabled],
.btn-large[disabled],
.btn-small[disabled],
.btn-flat[disabled] {
  pointer-events: none;
  background-color: $button-disabled-background !important;
  box-shadow: none;
  color: $button-disabled-color !important;
  cursor: default;
  &:hover {
    background-color: $button-disabled-background !important;
    color: $button-disabled-color !important;
  }
}

// Shared icon styles
.btn,
.btn-floating,
.btn-large,
.btn-small,
.btn-flat {
  font-size: $button-font-size;
  outline: 0;
  i {
    font-size: $button-icon-font-size;
    line-height: inherit;
  }
}

// Shared focus button style
.btn,
.btn-floating {
  &:focus {
    background-color: darken($button-raised-background, 10%);
  }
}

// Raised Button
.btn {
  text-decoration: none;
  color: $button-raised-color;
  background-color: $button-raised-background;
  text-align: center;
  letter-spacing: .5px;
  @extend .z-depth-1;
  transition: background-color .2s ease-out;
  cursor: pointer;
  &:hover {
    background-color: $button-raised-background-hover;
    @extend .z-depth-1-half;
  }
}

// Floating button
.btn-floating {
  &:hover {
    background-color: $button-floating-background-hover;
    @extend .z-depth-1-half;
  }
  &:before {
    border-radius: 0;
  }
  &.btn-large {
    &.halfway-fab {
      bottom: -$button-floating-large-size / 2;
    }
    width: $button-floating-large-size;
    height: $button-floating-large-size;
    padding: 0;
    i {
      line-height: $button-floating-large-size;
    }
  }

  &.btn-small {
    &.halfway-fab {
      bottom: -$button-floating-small-size / 2;
    }
    width: $button-floating-small-size;
    height: $button-floating-small-size;
    i {
      line-height: $button-floating-small-size;
    }
  }

  &.halfway-fab {
    &.left {
      right: auto;
      left: 24px;
    }
    position: absolute;
    right: 24px;
    bottom: -$button-floating-size / 2;
  }
  display: inline-block;
  color: $button-floating-color;
  position: relative;
  overflow: hidden;
  z-index: 1;
  width: $button-floating-size;
  height: $button-floating-size;
  line-height: $button-floating-size;
  padding: 0;
  background-color: $button-floating-background;
  border-radius: $button-floating-radius;
  @extend .z-depth-1;
  transition: background-color .3s;
  cursor: pointer;
  vertical-align: middle;
  i {
    width: inherit;
    display: inline-block;
    text-align: center;
    color: $button-floating-color;
    font-size: $button-large-icon-font-size;
    line-height: $button-floating-size;
  }
}

// button fix
button.btn-floating {
  border: $button-border;
}

// Fixed Action Button
.fixed-action-btn {
  &.active {
    ul {
      visibility: visible;
    }
  }

  // Directions
  &.direction-left,
  &.direction-right {
    padding: 0 0 0 15px;
    ul {
      text-align: right;
      right: 64px;
      top: 50%;
      transform: translateY(-50%);
      height: 100%;
      left: auto;
      /*width 100% only goes to width of button container */
      width: 500px;
      li {
        display: inline-block;
        margin: 7.5px 15px 0 0;
      }
    }
  }
  &.direction-right {
    padding: 0 15px 0 0;
    ul {
      text-align: left;
      direction: rtl;
      left: 64px;
      right: auto;
      li {
        margin: 7.5px 0 0 15px;
      }
    }
  }
  &.direction-bottom {
    padding: 0 0 15px 0;
    ul {
      top: 64px;
      bottom: auto;
      display: flex;
      flex-direction: column-reverse;
      li {
        margin: 15px 0 0 0;
      }
    }
  }
  &.toolbar {
    &.active {
      &>a i {
        opacity: 0;
      }
    }
    padding: 0;
    height: $button-floating-large-size;
    ul {
      display: flex;
      top: 0;
      bottom: 0;
      z-index: 1;
      li {
        flex: 1;
        display: inline-block;
        margin: 0;
        height: 100%;
        transition: none;
        a {
          display: block;
          overflow: hidden;
          position: relative;
          width: 100%;
          height: 100%;
          background-color: transparent;
          box-shadow: none;
          color: #fff;
          line-height: $button-floating-large-size;
          z-index: 1;
          i {
            line-height: inherit;
          }
        }
      }
    }
  }
  position: fixed;
  right: 23px;
  bottom: 23px;
  padding-top: 15px;
  margin-bottom: 0;
  z-index: 997;
  ul {
    left: 0;
    right: 0;
    text-align: center;
    position: absolute;
    bottom: 64px;
    margin: 0;
    visibility: hidden;
    li {
      margin-bottom: 15px;
    }
    a.btn-floating {
      opacity: 0;
    }
  }
  .fab-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
    width: $button-floating-size;
    height: $button-floating-size;
    background-color: $button-floating-background;
    border-radius: $button-floating-radius;
    transform: scale(0);
  }
}

// Flat button
.btn-flat {
  box-shadow: none;
  background-color: transparent;
  color: $button-flat-color;
  cursor: pointer;
  transition: background-color .2s;
  &:focus,
  &:hover {
    box-shadow: none;
  }
  &:focus {
    background-color: rgba(0, 0, 0, .1);
  }
  &.disabled,
  &.btn-flat[disabled]  {
    background-color: transparent !important;
    color: $button-flat-disabled-color !important;
    cursor: default;
  }
}

// Large button
.btn-large {
  @extend .btn;
  height: $button-large-height;
  line-height: $button-large-height;
  font-size: $button-large-font-size;
  padding: 0 28px;

  i {
    font-size: $button-large-icon-font-size;
  }
}

// Small button
.btn-small {
  @extend .btn;
  height: $button-small-height;
  line-height: $button-small-height;
  font-size: $button-small-font-size;
  i {
    font-size: $button-small-icon-font-size;
  }
}

// Block button
.btn-block {
  display: block;
}