body{
    background-image: url(../img/content-bg.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment:fixed;
}
.main{
    width: 1200px;
    height: 100vh;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;    
}
.main-detail{
    width: 1200px;
    display: flex;
    justify-content: center;
}

.login{
    width: calc(100% / 3);
    height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: rgba(230, 239, 255,0.5);
    filter: blur(0.1px);
    border-radius: 10px;
    user-select: none;
}

.login-title>h2{
    text-align: center;
    color: #1b4a78;
}

.login-detail{
    margin-top: 20px;
}

.login-detail input{
    width: 300px;
    padding: 10px 5px;
    display: block;
    border: 1px solid gray;
    border-radius: 5px;
}
.btn{
    margin-top:30px;
    width: 300px;
    padding: 10px;
    border-radius: 5px;
    font-size: 16px;
    font-weight: bold;
    color: #ffffff;
    background-color: #1b4a78;
}

.foot{
    position: fixed;
    bottom: 0;
    width: 100%;
    height: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.foot_a{
    font-size: 16px;
    font-weight: bold;
    color: #1b4a78;
}