html,
body {
    height: 100%;
}

body {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
    align-items: center;
    padding-top: 40px;
    padding-bottom: 40px;
    background-image: url('../images/congruent_pentagon.png');
    background-color: #f5f5f5;
    margin-bottom: 80px;
}

.nav-tabs { margin-bottom: 1.5rem; font-size: 0.9rem; }
.code-input { letter-spacing: 0.5em; text-align: center; font-size: 1.5rem; font-weight: bold; }
.tab-content { min-height: 300px; }

.sticky-footer {
    position: fixed;
    bottom: 0;
    left: 0; right: 0;
    backdrop-filter: blur(10px);
    border-top: 1px solid #dee2e6;
    padding: 15px; z-index: 1000;
}

.form-sign-in {
    width: 100%;
    max-width: 450px;
    padding: 15px;
    margin: auto;
    background-color:white;
    border-radius: 10px;
    box-shadow: 0 10px 16px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19) !important;
}
.form-sign-in .checkbox {
    font-weight: 400;
}
.form-sign-in .form-control {
    position: relative;
    box-sizing: border-box;
    height: auto;
    padding: 10px;
    font-size: 16px;
}
.form-sign-in .form-control:focus {
    z-index: 2;
}
.form-sign-in input[type="email"] {
    margin-bottom: -1px;
    border-bottom-right-radius: 0;
    border-bottom-left-radius: 0;
}
.form-sign-in input[type="password"] {
    margin-bottom: 10px;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
}