*{
    padding: 0;
    margin: 0;/*重设语法*/
}
h1{
    color: blueviolet;
    position: absolute;
    left: 120px;
    top: 0;
    line-height: 80px;
    background-image: url(../images/logo.png);
    background-repeat: no-repeat;
    background-position: center;
    width: 350px;
    height: 80px;
    text-indent: -9999px;/*文字缩排*/
}
.topic{
    background-color: rgb(167, 209, 242);
    background-image: url(../images/die.jpg);
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    height: 85vh;
    display: flex;
    flex-direction: column;/*垂直排列*/;
   align-items: center;/*垂直居中*/;
   justify-content: center;/*水平居中*/
   font-size: 60px;
}
section,main{
    background-color: burlywood;
}
header{
    background-color: rgb(23, 19, 19);
    height: 80px;
    width: 100%;
    position: relative;
}
header li{
    display: inline;
    margin-right: 4vw;
}
header ul{
    position: absolute;
    top: 0;
    right: 10vw; 
    line-height: 80px;
}
header a{
    color: rgb(234, 227, 227);
    text-decoration: none;
}
header a:hover{
    text-decoration: underline;
    color: blueviolet;
}

.topic a{
   color: rgb(167, 209, 242);
   font-size: 20px;
   text-decoration: none;
   border: 2px solid rgb(167, 209, 242);
   border-radius: 10px;
   padding: 10px 20px;
   margin: 5px;
}
.topic h2{
    font-size: 60px;
    color: aliceblue;
}
.topic h6{
    margin-left: 20px;
    position: absolute;
    top: 10vh;
    left: 0vw;
    color: rgb(240, 255, 246);
}
.wen{
    display: flex;

}
.wen img{
    width: 50%;
}
.txt{

    background-color: aliceblue;
    width: 50%;
    
}
.txt p{
    display: flex;
    flex-direction: column;
    justify-items: center;
    align-items: center;
    font-size: 15px;
    line-height: 1.8em;
    padding: 10px;
}
blockquote{
    background-color: #485652;
    background-image: url(../images/gif.gif);
    padding: 10px;
    height: 250px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 30px;
    line-height: 1.8em;
}
blockquote a{
    color: rgb(232, 237, 240);
    text-decoration: none;

}
blockquote a:hover{
    text-decoration: underline;
    color : blueviolet;
}