*{
    padding: 0;
    margin: 0;
}
body,html{
    width: 100%;
    height: 100%;
    background: #f2f2f2;
}
.main-body{
    background: #fff;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    -webkit-transform: translate(-50%,-50%);
    -moz-transform: translate(-50%,-50%);
    -o-transform: translate(-50%,-50%);
    width: 70%;
    box-shadow: 2px 2px 5px #ccc;
    border-radius: 10px;
    overflow: hidden;
}
.main-body .login-wrapper-img img{
    width: 100%;
}
.main-body .login-btn-group{
    padding: 50px;
    display: flex;
    display: -webkit-flex;
    display: -moz-flex;
    display: -o-flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
}
.main-body .login-btn-group .login-btn{
    flex: 1;
    text-align: center;
}
.main-body .login-btn-group .login-btn a{
    display: inline-block;
    background: #236ec8;
    padding: 10px 18px;
    color: #fff;
    text-decoration: unset;
    border-radius: 5px;
}
@media screen and ( max-width: 992px ){
    .main-body{
        width: 80%;
    }
}
@media screen and ( max-width: 768px ){
    .main-body{
        width: 90%;
    }
    .main-body .login-btn-group{
        -webkit-flex-wrap: wrap;
        -moz-flex-wrap: wrap;
        -ms-flex-wrap: wrap;
        -o-flex-wrap: wrap;
        flex-wrap:wrap;
    }
    .main-body .login-btn-group .login-btn{
        flex: auto;
        width: 100%;
        text-align: center;
        margin: 10px 0;
    }
    .main-body .login-btn-group .login-btn a{
        width: 90%;
    }
}