styles.css

body{
    background-image: linear-gradient(to bottom right, rgb(255, 255, 255), rgb(199, 249, 255));
    height: 100%;
    margin: 0;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

#over20 {
    border: 2px solid red;
    background-color: #ffc7c7;
    font-family: 'Montserrat', sans-serif;
}

#under20 {
    border: 2px solid green;
    background-color: #ccffd7;
    font-family: 'Montserrat', sans-serif;
}

.jumbotron {
    text-align: center;
    margin-top: 10px;
    color: white;
    background-image: linear-gradient(180deg, rgb(0, 187, 255), rgb(158, 221, 255)); !important;
    font-family: 'Josefin Sans', sans-serif;
    border-radius: 10px !important;
    text-decoration: underline;
}

#submitInfoBtn {
    position: absolute;
    bottom: 0px;
    width: 83%;
    font-family: 'Montserrat', sans-serif;
}

#table {
    margin-top: 15px;
    background-color: white;
    font-family: 'Montserrat', sans-serif;
}

h3 {
    text-align: center;
}

#alert {
    text-align: center;
    font-family: 'Montserrat', sans-serif;
}

.bodyContainer {
    background-image: linear-gradient(180deg, rgba(0, 187, 255, 0.358), rgba(158, 221, 255, 0.173));
    margin-top: 10px;
    padding-top: 10px;
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-radius: 10px;
  }