/* 去除默认样式 */
*{
    margin: 0;
    padding: 0;
}
li{
    list-style: none;
}
a{
    text-decoration: none;
}
body,
html {
    overflow: hidden;
    font-family: Helvetica, Arial, sans-serif;
    color: #fff;
    font-size: 11px;
    width: 100%;
    height: 100%;
    background: #b72424;
    /* 渐变色，处理兼容问题 */
    background: -moz-radial-gradient(center, ellipse cover, #b72424 0%, #492727 100%);
    background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%, #b72424), color-stop(100%, #492727));
    background: -webkit-radial-gradient(center, ellipse cover, #b72424 0%, #492727 100%);
    background: radial-gradient(center, ellipse cover, #b72424 0%, #492727 100%);
}

@keyframes spin {
    0% {
        transform: rotateY(0deg);
    }

    100% {
        transform: rotateY(360deg);
    }
}

body {
    /* 透视效果 */
    perspective: 3000px;
    perspective-origin: 0 20%;
}

.tree {
    margin: 0 auto;
    position: relative;
    animation: spin 18s infinite linear;
    transform-origin: 50% 0;
    transform-style: preserve-3d;
}

.tree>* {
    position: absolute;
    transform-origin: 0 0;
	cursor:pointer;
}
.tree:hover{
    animation-play-state: paused;
}
/* 底下文字部分样式*/
.project-title {
    position: absolute;
    left: 25px;
    bottom: 20px;
    font-size: 16px;
    color: #fff;
    cursor: default;
}

.credits {
    position: absolute;
    right: 20px;
    bottom: 25px;
    font-size: 15px;
    z-index: 20;
    color: #fff;
    vertical-align: middle;
}

.credits a {
    padding: 8px 10px;
    color: rgba(255, 255, 255, 0.7);
    /*border: 2px solid rgba(255, 255, 255, 0.7);*/
    text-decoration: none;
}

.credits a:hover {
    /*border-color: #fff;*/
    color: #fff;
}

@media screen and (max-width: 1040px) {
    .project-title {
        display: none;
    }

    .credits {
        width: 100%;
        left: 0;
        right: auto;
        bottom: 0;
        padding: 30px 0;
        background: #b72424;
        text-align: center;
    }

    .credits a {
        display: inline-block;
        margin-top: 7px;
        margin-bottom: 7px;
    }
}