// 箭头

.down-arrow(@color:#bec8ca) {
    position: relative;
    &:after {
        content: "";
        border-left: 2px solid @color;
        border-top: 2px solid @color;
        transform: translateY(-50%) rotate(-135deg);
        //为了更准确的居中,添加translateY(-50%),即上移自身的50%。注意必须写在rotate前面,否则坐标系被旋转后再平移达不到想要的效果
        display: inline-block;
        height: 8px;
        width: 8px;
        position: absolute;
        top: 50%;
        right: 2px;
    }
}
.up-arrow(@color:#bec8ca) {
    position: relative;
    &:after {
        content: "";
        border-left: 2px solid @color;
        border-top: 2px solid @color;
        transform: translateY(-50%) rotate(45deg);
        display: inline-block;
        height: 8px;
        width: 8px;
        position: absolute;
        top: 50%;
        right: 2px;
    }
}
.right-arrow(@color:#bec8ca) {
    position: relative;
    &:after {
        content: "";
        border-left: 2px solid @color;
        border-top: 2px solid @color;
        transform: translateY(-50%) rotate(135deg);
        display: inline-block;
        height: 8px;
        width: 8px;
        position: absolute;
        top: 50%;
        right: 2px;
    }
}
// m 一像素边框
.one-px-top(@color:#fff) {
    position: relative;

    &:before {
        position: absolute;
        content: "";
        left: 0;
        top: 0;
        height: 1px;
        width: 100%;
        background-color: @color;
        transform: scaleY(0.5);
    }
}

.one-px-bottom(@color:#fff) {
    position: relative;

    &:after {
        position: absolute;
        content: "";
        left: 0;
        bottom: 0;
        height: 1px;
        width: 100%;
        background-color: @color;
        transform: scaleY(0.5);
    }
}

.one-px-right(@color:#fff) {
    position: relative;

    &:after {
        position: absolute;
        content: "";
        right: 0;
        top: 0;
        width: 1px;
        height: 100%;
        background-color: @color;
        transform: scaleX(0.5);
    }
}

.one-px-left(@color:#fff) {
    position: relative;

    &:before {
        position: absolute;
        content: "";
        left: 0;
        top: 0;
        width: 1px;
        height: 100%;
        background-color: @color;
        transform: scaleX(0.5);
    }
}

.one-px-button(@color:#fff) {
    position: relative;

    &:after {
        content: " ";
        width: 200%;
        height: 200%;
        position: absolute;
        top: 0;
        left: 0;
        border: 1px solid @color;
        transform: scale(0.5);
        transform-origin: 0 0;
        box-sizing: border-box;
        border-radius: 10px;
    }
}

.one-px-box(@color:#fff) {
    position: relative;

    &:after {
        content: " ";
        width: 200%;
        height: 200%;
        position: absolute;
        top: 0;
        left: 0;
        border: 1px solid @color;
        transform: scale(0.5);
        transform-origin: 0 0;
        box-sizing: border-box;
        border-radius: 10px;
        // 事件击穿
        pointer-events: none;
    }
}

// 二倍图 三倍图
.bg-image(@url) {
    background-image:~"url('@{url}@2x.png')";
    @media (-webkit-min-device-pixel-ratio: 3), (min-device-pixel-ratio:3) {
        background-image:~"url('@{url}@3x.png')";
    }
}

// 角度渐变 三色
.linear-gradient(@deg: -180deg, @start: #4771ec,@startPos: 0%,@minddle: #4768ea, @middlePos: 20%, @end: #2731cd, @endPos: 100%) {
    filter: progid:DXImageTransform.Microsoft.Gradient(gradientType=0, startColorStr=@start, endColorStr=@end);
    background: linear-gradient(
        @deg,
        @start @startPos,
        @minddle @middlePos,
        @end @endPos
    );
}
// 两色渐变 两色
.linear-gradient2(@deg: to bottom, @start: #4771ec,@startPos: 0%, @end: #2731cd, @endPos: 100%) {
    filter: progid:DXImageTransform.Microsoft.Gradient(gradientType=0, startColorStr=@start, endColorStr=@end);
    background: linear-gradient(
        @deg,
        @start @startPos,
        @end @endPos
    );
}

.c-zoom-time(@time: 4s,@type: ease-in-out, @delay:0s) {
    animation: zoomIn2 @time @type @delay infinite;
}
@keyframes zoomIn2 {
  from {
    transform: scale(.95);
  }

  50% {
    transform: scale(1.05);
  }

  100% {
    transform: scale(.95);
  }
}