body{
    background-image: linear-gradient(to right, #999999,#330867);
}
.drop{
    text-align: center;
    margin: 0 auto;
}
#btn1{
    /*float:left;*/
    padding-right: 0px;
}
#btn2{
    padding-right: 0px;
}
.dropbtn{
    background-image: linear-gradient(to right,#fc533d,#fd79a8);
    color: white;
    padding: 12px;
    font-size: 16px;
    border: none;
    cursor: pointer;
    box-shadow: 6px 6px 12px #888888;
}
.dropdown{
    position: relative;
    display: inline-block;
}
.dropdown-content{
    display: none;
    position: absolute;
    background-image: linear-gradient(to right,#f33e89,#c3f629);
    min-width: 160px;
    box-shadow: 6px 6px 6px #888888;
}
.dropdown-content a{
    color: black;
    padding: 2px 8px;
    text-decoration: none;
    display: block;
}
.dropdown-content a:hover{
    background-image: linear-gradient(to right,#f6c03a,#d108e7);
}
.dropdown:hover .dropdown-content{
    display: block;
}
.dropdown:hover .dropbtn{
    background-color: #3e8e41;
}
.neirong{
    text-align: center;
    padding-top: 0px;
}
iframe{
    border: 0;
    width: 100%;
    height: 92%;
}

.user-info {
    text-align: center;
    /* float: right; */
    padding: 10px 15px;
    color: #333;
    font-size: 14px;
    background: #f8f9fa;
    border-radius: 4px;
    margin-right: 10px;
}

/* .user-info span {
    margin-right: 10px;
} */

.user-info {
    /* float: right; */
    padding: 10px 15px;
    color: #333;
    font-size: 14px;
    background: #f8f9fa;
    border-radius: 4px;
    margin-right: 10px;
    transition: opacity 0.5s ease;
    opacity: 1;
}

/* .user-info span {
    margin-right: 10px;
} */

.user-info.hide {
    opacity: 0;
    display: none;
}