html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
}

.content-nav-link{

}

.username-login-button {
    display: flex;
    align-items: center;
    gap: 0 15px;
}

    .username-login-button .login-container button {
        margin: 0
    }

#loggedUsername {
    display: flex;
    align-items: flex-end;
    gap: 0 5px;
}

    #loggedUsername span {
        font-weight: 500;
        font-size: 18px;
    }

    #loggedUsername .bi-person {
        font-size: 20px;
    }

#not-logged-in-message, #choose-course-first, #choose-lesson-first {
    display: flex;
    justify-content: center;
    gap: 10px 0;
    padding: 10px 0;
    background-color: #1b6ec2;
    margin-top: 10px;
    flex-wrap: wrap;
}

    #not-logged-in-message p, #choose-course-first p, #choose-lesson-first p {
        color: #fff;
        margin: 0;
        text-align: center;
        display: block;
        width: 100%;
    }


.username-login-button {
    display: flex;
    align-items: center;
    gap: 0 15px;
}

    .username-login-button .login-container button {
        margin: 0
    }

#loggedUsername {
    display: flex;
    align-items: flex-end;
    gap: 0 5px;
}

    #loggedUsername span {
        font-weight: 500;
        font-size: 18px;
    }

    #loggedUsername .bi-person {
        font-size: 20px;
    }

#not-logged-in-message, #choose-course-first, #choose-lesson-first {
    display: flex;
    justify-content: center;
    gap: 10px 0;
    padding: 10px 0;
    background-color: #1b6ec2;
    margin-top: 10px;
    flex-wrap: wrap;
}

    #not-logged-in-message p, #choose-course-first p, #choose-lesson-first p {
        color: #fff;
        margin: 0;
        text-align: center;
        display: block;
        width: 100%;
    }

.modal-content {
    background-color: #fefefe;
    margin: 15% auto; /* 15% from the top and centered */
    padding: 20px;
    border: 1px solid #888;
    width: 80%; /* Could be more or less, depending on screen size */
    max-width: 600px; /* Maximum width */
}

.close-button {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

    .close-button:hover,
    .close-button:focus {
        color: black;
        text-decoration: none;
        cursor: pointer;
    }