ol, ul {
    list-style: none
}

a {
    color: #212121;
    transition: color .3s
}

a:hover {
    color: #00a1d6
}

a, a:hover {
    text-decoration: none
}

:focus, a:focus {
    outline: none
}

img:not([src]), img[src=""] {
    opacity: 0
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

* ::selection {
    background: #73c9e5;
    color: inherit
}

* ::-moz-selection {
    background: #73c9e5;
    color: inherit
}

body {
    margin: 0;
    padding: 0;
    color: #505050;
    font: 14px -apple-system, BlinkMacSystemFont, Helvetica Neue, Helvetica, Arial, PingFang SC, Hiragino Sans GB, Microsoft YaHei, sans-serif;
    -webkit-font-smoothing: antialiased;
}

.clearfix:before, .clearfix:after {
    content: "";
    display: table;
}

.clearfix:after {
    clear: both;
}

.icon-xiaosanjiao {
    position: absolute;
    top: -20px;
    font-size: 13px;
    height: 36px;
    color: #fff;
    line-height: 36px;
}

@keyframes move {
    0% {
        transform: translateY(0)
    }
    5% {
        transform: translateY(-36px)
    }
    50% {
        transform: translateY(-36px)
    }
    55% {
        transform: translateY(-72px)
    }
    to {
        transform: translateY(-72px)
    }
}

@keyframes slowBox {
    from {
        opacity: 0;
        /* transform: translate(0,0); */
    }
    to {
        opacity: 1;
        transform: translate(0,4px) perspective(1px);
    }
}

.fr {
    float: right;
}

.fl {
    float: left;
}

img{
    width: 100%;
    border-radius: 2px;
    vertical-align: middle;
}

.add-back::before {
    content: "";
    display: block;
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 48px;
    border-radius: 2px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.5));
}