@bg-color:#FFF;

*{
    box-sizing: border-box;
}
html,body{
    margin:0;
}
.nav{
    background-color:#353b48;
    height:50px;
    line-height: 50px;
    select{
        height: 42px;
        border: 0;
        outline:0;
        min-width: 200px;
    }
}

.studentList{
    display: flex;
    flex-wrap: wrap;
    .user{
        border: 1px solid #454545;
        margin: 5px;
        padding: 5px;
        .user_img{
            img{
                width:200px;
                height:200px;
            }
        }
        .username{
            text-align: center;
            display: inline-block;
            width: 200px;
        }
    }
}