html , body{
    height: 100%;
    width: 100%;
    margin: 0;
    border: 0;
    padding: 0;
    line-height: 1;
}



.content{
    text-align: center;
    font-size: 100%;
    line-height: 150%;
    text-indent: 2em;
    width: 20%;
    height: 50%;
    padding: 2%;
    margin: 5% 1em 1em 1em;
    opacity: 0;
    transition: box-shadow 300ms ease 0s , transform 1000ms ease 0s , opacity 1000ms ease 0s;
    float: left;
    box-sizing: border-box;/*设置块为边界模式可以边界及以内保持不变，添加内边距等只会减小内容大小*/
    border: 5px solid #ff0003; /*没有solid显示样式则无法显示*/
    background-color: #d1ffec;
    overflow: auto;
}

.content:hover{
    box-shadow: 5px 5px 5px #ff0003;
}

.image{
    float: right;
    height: 25%;
    width: 25%;
    background-image: url("../IMAGE/image1.jpeg");
    background-size: contain; /* 确保图片完全覆盖 */
    background-position: center; /* 图片居中 */
    background-repeat: no-repeat; /*图片不重复*/
}

#search{
    font-size: 25px;
    width: 100%;
    height: 50px;
    text-align: center;
    background-color: #88d6ff;
    margin: 0;
    border: 0;
    padding-top: 20px;
}

pre{
    width: 100%;
    margin: 0;
    border: 0;
    padding: 0;
}

a{
    color: black;
    transition: color 200ms ease 0s;
}

a:hover{
    color: red;
}