@keyframes dtb-spinner {
  100% {
    transform: rotate(360deg);
  }
}

@-o-keyframes dtb-spinner {
  100% {
    -o-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

@-ms-keyframes dtb-spinner {
  100% {
    -ms-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

@-webkit-keyframes dtb-spinner {
  100% {
    -webkit-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

@-moz-keyframes dtb-spinner {
  100% {
    -moz-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

div {
  &.dt-button-info {
    position: fixed;
    top: 50%;
    left: 50%;
    width: 400px;
    margin-top: -100px;
    margin-left: -200px;
    background-color: white;
    border: 2px solid #111;
    box-shadow: 3px 3px 8px rgba(0, 0, 0, 0.3);
    border-radius: 3px;
    text-align: center;
    z-index: 21;

    h2 {
      padding: 0.5em;
      margin: 0;
      font-weight: normal;
      border-bottom: 1px solid #ddd;
      background-color: #f3f3f3;
    }

    > div {
      padding: 1em;
    }
  }

  &.dt-button-collection-title {
    text-align: center;
    padding: 0.3em 0 0.5em;
    font-size: 0.9em;

    &:empty {
      display: none;
    }
  }

  &.dt-button-collection {
    position: absolute;
    z-index: 2001;

    div {
      &.dropdown-menu {
        display: block;
        z-index: 2002;
        min-width: 100%;
      }

      &.dt-button-collection-title {
        background-color: white;
        border: 1px solid rgba(0, 0, 0, 0.15);
      }
    }

    &.fixed {
      position: fixed;
      top: 50%;
      left: 50%;
      margin-left: -75px;
      border-radius: 0;

      &.two-column {
        margin-left: -200px;
      }

      &.three-column {
        margin-left: -225px;
      }

      &.four-column {
        margin-left: -300px;
      }
    }

    > :last-child {
      display: block !important;
      -webkit-column-gap: 8px;
      -moz-column-gap: 8px;
      -ms-column-gap: 8px;
      -o-column-gap: 8px;
      column-gap: 8px;

      > * {
        -webkit-column-break-inside: avoid;
        break-inside: avoid;
      }
    }

    &.two-column {
      width: 400px;

      > :last-child {
        padding-bottom: 1px;
        -webkit-column-count: 2;
        -moz-column-count: 2;
        -ms-column-count: 2;
        -o-column-count: 2;
        column-count: 2;
      }
    }

    &.three-column {
      width: 450px;

      > :last-child {
        padding-bottom: 1px;
        -webkit-column-count: 3;
        -moz-column-count: 3;
        -ms-column-count: 3;
        -o-column-count: 3;
        column-count: 3;
      }
    }

    &.four-column {
      width: 600px;

      > :last-child {
        padding-bottom: 1px;
        -webkit-column-count: 4;
        -moz-column-count: 4;
        -ms-column-count: 4;
        -o-column-count: 4;
        column-count: 4;
      }
    }

    .dt-button {
      border-radius: 0;
    }

    &.fixed {
      max-width: none;

      &:before, &:after {
        display: none;
      }
    }
  }

  &.dt-button-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 999;
  }

  &.dt-buttons {
    button.btn.processing, div.btn.processing, a.btn.processing {
      color: rgba(0, 0, 0, 0.2);
    }

    button.btn.processing:after, div.btn.processing:after, a.btn.processing:after {
      position: absolute;
      top: 50%;
      left: 50%;
      width: 16px;
      height: 16px;
      margin: -8px 0 0 -8px;
      box-sizing: border-box;
      display: block;
      content: " ";
      border: 2px solid #282828;
      border-radius: 50%;
      border-left-color: transparent;
      border-right-color: transparent;
      animation: dtb-spinner 1500ms infinite linear;
      -o-animation: dtb-spinner 1500ms infinite linear;
      -ms-animation: dtb-spinner 1500ms infinite linear;
      -webkit-animation: dtb-spinner 1500ms infinite linear;
      -moz-animation: dtb-spinner 1500ms infinite linear;
    }
  }
}

@media screen and (max-width: 767px) {
  div.dt-buttons {
    float: none;
    width: 100%;
    text-align: center;
    margin-bottom: 0.5em;

    a.btn {
      float: none;
    }
  }
}
@media screen and (max-width: 767px) {
  .dt-buttons.btn-group {
      position: relative;
      display: flex;
      margin: 0 auto;
      justify-content: center;
      right: 0;
      left: 0;
      margin-bottom: 10px;
  }
}