ul,
li {
    margin: 0;
    padding: 0;
}

.layout {
    width: 800px;
    margin: 0 auto;
}

/* 设置h1标题文字 */
.content h1 {
    color: #666;
    text-align: center;
    padding-bottom: 10px;
    border-bottom: 1px solid #ccc;
}

.container {
    margin-left: -10px;
}

.container:after {
    content: '';
    display: block;
    clear: both;
}
/* 设置li左浮动和清除样式 */
.container .card {
    float: left;
    margin-left: 10px;
    margin-top: 30px;
    list-style: none;
}
/* 设置阴影 */
.card {
    width: 260px;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19)!important;
}

.card>img {
    width: 100%;
    opacity: 0.75;
}

.card .detail {
    padding: 1px 16px;
}

/* 设置字体居中 */
.card .text {
    text-align: center;
}