course.css

body {
    background-color: #3A4EBC;
    font-family: 'Montserrat', sans-serif;
    color: whitesmoke;
}

.container {
    margin: 1em;
}

.navigation {
    display: flex;
    justify-content: space-between;
}

.navigation-menu {
    display: flex;
    padding-left: 0;
}

.navigation-menu li {
    margin: 1em;
    list-style: none;
    color: white;

}

.navigation-menu li:first-child {
    margin-left: 0;
}

.navigation-menu li a, .navigation-menu li a:hover,
.navigation-menu li a:visited{
    text-decoration: none;
    color: #AFB6F4;
    text-transform: uppercase;
}


.navigation-menu li a.current {
    color: #DFE1FB;
}

#attendee-content {
    background-color: #5666E1;
    border-radius: 6px;
    width: 750px;
}

#attendee-content-action {
    display: flex;
    justify-content: space-between;
}

#attendee-content #title {
    padding: 20px;
    text-transform: uppercase;
}

#attendee-content table {
    width: 100%;
    border-collapse: collapse;
}

#attendee-content table td {
    border-top: 2px solid #3A4EBC;
    text-align: center;
}

#attendee-content table tr:last-child td:first-child {
    border-bottom-left-radius: 10px;
}
#attendee-content table tr:last-child td:last-child  {
    border-bottom-right-radius: 10px;
}

#add-attendee input{
    display: block;
}

.header-row {
    color: #AFB6F4;
    background-color: #5666E1;
    border-top: 2px solid #3A4EBC;
}

.header-row .attendee-header {
    text-align: center;
    padding: 20px;
    text-transform: uppercase;
}

table .attendee-row {
    background-color: #4D5ED4;
    padding: 20px 10px;
}

table .attendee-row td {
    padding: 20px;
    text-transform: uppercase;
}

.action-btn {
    background-color: #6DCCA2;
    color: white;
    border-radius: 20px;
    border: none;
    text-transform: uppercase;
    font-size: 0.8em;
    cursor: pointer;
    margin: 10px;
    height: 40px;
    width: 150px;
}