@media (max-width: 543px) {
    h2{font-size: 20px;}
    .login_panel{ 
        padding-top: 5px;
        height: 250px;
        width: 230px;
        margin-top: 70px; 
    }
    .form_input{
        padding: 5px;
        font-size: 14px;
        margin-top: 6px;
        margin-bottom: 6px;
        width: 150px;
        height: 40px;
    }
    .form_btn{
        margin-top: 5px;
        margin-bottom: 10px;
        width: 150px;
        height: 30px;
        font-size: 14px;
    }
}
@media (min-width: 544px) and (max-width: 767px) {
    .login_panel{ 
        padding-top: 10px;
        height: 300px;
        width: 400px;
        margin-top: 150px; 
    }
    .form_input{
        padding: 5px;
        font-size: 18px;
        margin-top: 10px;
        margin-bottom: 10px;
        width: 300px;
        height: 40px;
    }
    .form_btn{
        margin-top: 5px;
        margin-bottom: 10px;
        width: 300px;
        height: 30px;
        font-size: 18px;
    }
}
@media (min-width: 768px) and (max-width: 991px) {
    .login_panel{ 
        padding-top: 10px;
        height: 300px;
        width: 400px;
        margin-top: 150px; 
    }
    .form_input{
        padding: 5px;
        font-size: 18px;
        margin-top: 10px;
        margin-bottom: 10px;
        width: 300px;
        height: 40px;
    }
    .form_btn{
        margin-top: 5px;
        margin-bottom: 10px;
        width: 300px;
        height: 30px;
        font-size: 18px;
    }
}
@media (min-width: 992px) and (max-width: 1199px) {
    .login_panel{ 
        padding-top: 10px;
        height: 300px;
        width: 400px;
        margin-top: 150px; 
    }
    .form_input{
        padding: 5px;
        font-size: 18px;
        margin-top: 10px;
        margin-bottom: 10px;
        width: 300px;
        height: 40px;
    }
    .form_btn{
        margin-top: 5px;
        margin-bottom: 10px;
        width: 300px;
        height: 30px;
        font-size: 18px;
    }
}
@media (min-width: 1200px) {
    .login_panel{ 
        padding-top: 10px;
        height: 300px;
        width: 400px;
        margin-top: 150px; 
    }
    .form_input{
        padding: 5px;
        font-size: 18px;
        margin-top: 10px;
        margin-bottom: 10px;
        width: 300px;
        height: 40px;
    }
    .form_btn{
        margin-top: 5px;
        margin-bottom: 10px;
        width: 300px;
        height: 30px;
        font-size: 18px;
    }
}
html,body{
    height: 100%;
}
.login_page{
    background-color: #1b6d85;
    min-height: 100%;
}
.login_panel{
    background-color: #269abc;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    color:#fff;
}
.form_input{
    color: #fff;
    text-align: center;
    background-color: #1b6d85;
    border: none;
}
.form_btn{
    border: none;
    background-color: #006666;
}