/* 全局设置 */
body {
    font-size: 3vw;
    padding: 0;
    margin: 0;
    min-height: 100vh;
    background-image: url(../../img/background.webp);
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
    background-color: rgb(11, 11, 46);
}


/* 以下是顶部导航栏的相关设置 */
.navbar {
    background-color: rgba(4, 71, 115, 0.589);
    height: 32vh;
    width: 100%;
    /* position: fixed; */
    /* top: 0; */
    /* display: flex; */
}

.nav-logo {
    /* padding-left: 47%;
    padding-top: 5px; */
    height: 0;
}

.nav-logo img {
    height: 0;
    width: 0;
}

.nav-button {
    margin-left: 0px;
    /* display: flex; */
}

.nav-button div {
    padding-left: 40%;
    /* padding-right: 50%; */
    margin: 0;
    /* width: ; */
    margin-left: 0;
    line-height: 5vh;
    border-bottom-style: solid;
    border-width: 2px;
    border-color: rgba(240, 248, 255, 0.497);
}

.nav-button a {
    text-decoration: none;
    text-align: center;
    color: aliceblue;
}

.nav-button div:hover {
    background-color: rgb(32, 187, 234);
}

.login_rec_box {
    position: absolute;
    /* right: 1%; */
    display: flex;
    /* background-color: blanchedalmond; */
    line-height: 4vh;
}

.login_rec_box div {
    background-color: rgba(240, 248, 255, 0.284);
    border: 2px aliceblue;
    border-radius: 10px;
    width: 45vw;
    height: 4vh;
    margin-top: 1vh;
    margin-left: 3vw;
}

.login_rec_box a {
    /* position: fixed; */

    text-decoration: none;
    margin: 0;
    /* top: 10px; */
    margin-left: 19vw;
    color: azure;
    line-height: 4vh;
    /* font-size: 5px; */
}

.login_rec_box div:hover {
    background-color: aliceblue;
}

.login_rec_box a:hover {
    color: black;
}


/* 导航栏占位符 */
.nav-fir {
    height: 0;
    width: 100%;
}

/* 一个标签 */
.onetep{
    background-color: rgba(217, 235, 251, 0.853);
    padding-left: 20px;
    padding-bottom: 20px;
    margin-top: 20px;
    margin-left: 20px;
    margin-right: 20px;
    max-width: 100vw;
    border: 2px rgb(93, 165, 227);
    border-radius: 10px;
}
.onetep a{
    text-decoration: none;
    color: rgb(0, 0, 0);
    line-height: 50px;
    margin: 0 auto;
}
/* 主标题 */
.maintitle{
    font-size: 4vh;
    margin-bottom: 2vh;
    color: rgb(0, 0, 0);
}
/* 主文本 */
.maintext{
    font-size: 2vh;
    margin-bottom: 2vh;
    color: rgb(0, 0, 0);
}
/* 大按钮 */
.bigbutton{
    line-height: 5vh;
    font-size: 2vh;
    height: 5vh;
    width: 90vw;
    background-color: rgba(0, 0, 0, 0.202);
    border: 2px aliceblue;
    border-radius: 10px;
    text-align: center;
}
.bigbutton:hover{
    background-color: rgba(0, 0, 0, 0.589);
    color: azure;
}
.imgmain{
    margin-left: 0.5vw;
    width: 90vw;
    border-radius: 10px;
}
.last{
    width: 90vw;
    height: 20px;
}