:root {
    --input-padding-x: 1.5rem;
    --input-padding-y: .75rem;
}

label {
    font-weight: normal;
}

html,
body {
    height: 100%;
    min-height: 100%;
    font-size: 1rem;
}

body {
    background: url(../images/others/background_login.jpg);
    background-size: 100% 100%;
}

#container-display-error {
    display: none;
    padding: 30px;
    height: 100%;
    text-align: center;
    background-color: #fff;
}

#container-display-error img {
    width: 75px;
    margin-bottom: 20px;
}

#container-login {
    position: relative;
    margin: 0 auto;
    padding: 40px;
    width: 100%;
    max-width: 550px;
    min-width: 350px;
    height: auto;
    min-height: 100%;
    border: 1px solid #dedede;
    border-top: 0;
    border-bottom: 0;
    box-shadow: 0 0 5px 0 #777;
    background-color: #fff;
}

.form-label-group {
    position: relative;
    margin-bottom: 1rem;
}

.form-label-group input {
    height: auto;
    border-radius: 2rem;
}

.form-label-group>input,
.form-label-group>label {
    padding: var(--input-padding-y) var(--input-padding-x);
}

.form-label-group>label {
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    width: 100%;
    margin-bottom: 0;
    /* Override default `<label>` margin */
    line-height: 1.5;
    color: #495057;
    border: 1px solid transparent;
    border-radius: .25rem;
    transition: all .1s ease-in-out;
}

.form-label-group input::-webkit-input-placeholder {
    color: transparent;
}

.form-label-group input:-ms-input-placeholder {
    color: transparent;
}

.form-label-group input::-ms-input-placeholder {
    color: transparent;
}

.form-label-group input::-moz-placeholder {
    color: transparent;
}

.form-label-group input::placeholder {
    color: transparent;
}

.form-label-group input:not(:placeholder-shown) {
    padding-top: calc(var(--input-padding-y) + var(--input-padding-y) * (2 / 3));
    padding-bottom: calc(var(--input-padding-y) / 3);
}

.form-label-group input:not(:placeholder-shown)~label {
    padding-top: calc(var(--input-padding-y) / 3);
    padding-bottom: calc(var(--input-padding-y) / 3);
    font-size: 12px;
    color: #777;
}

.user-icon {
    width: 95px;
}

.login-note {
    font-size: 14px;
}

.captcha-image {
    position: relative;
    width: calc(100% - 55px);
    height: 50px;
    display: inline-flex;
}

.captcha-refresh {
    position: relative;
    width: 50px;
    height: 50px;
    display: inline-flex;
}

.img-captcha {
    width: 196.43px;
    height: 50px;
    max-height: 50px;
}

.img-captcha-refresh {
    width: 100%;
    cursor: pointer;
}

.btn-log-in {
    border-radius: 12px;
    padding: .75rem .75rem;
    width: 100%;
}

.bold {
    font-weight: 650;
}

.mt-1 {
    margin-top: 10px;
}

.mt-2 {
    margin-top: 20px;
}

.mt-3 {
    margin-top: 30px;
}

.mt-4 {
    margin-top: 40px;
}

.mt-5 {
    margin-top: 50px;
}

.mb-1 {
    margin-bottom: 10px;
}

.mb-2 {
    margin-bottom: 20px;
}

.mb-3 {
    margin-bottom: 30px;
}

.mb-4 {
    margin-bottom: 40px;
}

.mb-5 {
    margin-bottom: 50px;
}

.ml-1 {
    margin-left: 10px;
}

.ml-2 {
    margin-left: 20px;
}

.ml-3 {
    margin-left: 30px;
}

.ml-4 {
    margin-left: 40px;
}

.ml-5 {
    margin-left: 50px;
}

.mr-1 {
    margin-right: 10px;
}

.mr-2 {
    margin-right: 20px;
}

.mr-3 {
    margin-right: 30px;
}

.mr-4 {
    margin-right: 40px;
}

.mr-5 {
    margin-right: 50px;
}

@media (max-width: 550px) {
    #container-login {
        padding: 10px 30px 30px;
    }
    .user-icon {
        width: 115px;
    }
    .login-note {
        margin-bottom: 15px !important;
    }
}

@media (max-width: 350px) {
    #container-login {
        display: none;
    }
    #container-display-error {
        display: block;
    }
}