*{
   margin: 0;
    padding: 0; 
    font-family: '楷体';  
}
a{
    list-style: none;
    text-decoration: none;
    color: black;
}
body{
    display: flex;
	justify-content:center;
	align-items:center;
	height:100% ;
    width: 100%;
    background-image: url(https://i.postimg.cc/W3tdRxPk/1.png);
    background-size: cover; /* 图片完整显示 */
    background-position: center; /* 图片居中 */
    background-repeat: no-repeat; /* 不重复图片 */             
}
.zhuti{
    width: 1200px;
    height: 650px;
    background-color: #ffffff49;
    border-radius: 20px;
    margin: 100px 50px 100px;
   }
.cbl{
    width: 100px;
    height: 500px;
    transition: width 0.3s ease;
    position: relative;
    background-color: #ffffff49;
    float: left;
    margin: 75px 5px 75px;
    border-radius: 10px;
}  
.box{
    width: 100%;
    height: 20%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    text-align: center;
} 
.content{ 
    position: absolute;
     width: 110px;
     height: 95px;
     left: 100%;
     top:3px;
     /* background-color: #ffffff49; */
     color: black;
     display: flex;
     align-items: center;
     justify-content: center;
     transition: left 0.3s ease;
     opacity: 0;
     border-radius: 10px;

}
.box:hover .content{         /*它表示当鼠标悬停在具有 .box 类的元素上时，所有具有 .content 类的子元素将应用括号内的样式规则。*/
    left:18px;
    opacity: 1;
    background-color: pink; 
}
.cbl:hover{
    width: 150px;
}
.zhuti > .footer{
    width: 150px;
    height: 30px;
    position: absolute;
    bottom: 30px;
    right:190px
}