:root {
    --primary-color: #3B8C6E;
    --secondary-color: #89D99D;
    --tertiary-color: #1E5959;
    --text-color: #0B2B40;
    --dark-color: #164773;
    --bkg-color: #f2f2f2;
    --input-color: #f8f8f8;
    --warning-color: #FF0000;
}

* {
    font-family:system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    font-size: 16px;
    color: var(--text-color);
    box-sizing: border-box;
}

h1 {
    text-align: center;
    font-size: 1.75rem;
}

h2 {
    text-align: center;
    font-size: 1.5rem;
}

.center-content {
    display: flex;
    min-height: 100vh;
    justify-content: center;
    align-items: center;
    padding: 0;
    margin: 0;
}

.center-content > div {
    width: 100%;
    max-width: 1000px;
}

.form, .response {
    border-radius: 5px;
    background-color: var(--bkg-color);
    padding: 40px;
    margin: auto;
    max-width: 600px;
}

label {
    font-size: 1rem;
    font-weight: 600;
    line-height: 2rem;
    display: block;
}

input[type="text"], 
input[type="email"], 
input[type="password"], 
input[type="number"],
input[type="date"],
input[type="tel"],
input[type="url"] {
    width: 100%;
    margin: 0.25rem 0 1rem;
    display: inline-block;
    border: 1px solid var(--bkg-color);
    box-shadow: inset 0 1px 3px var(--bkg-color);
    background-color: var(--input-color);
    border-radius: 4px;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    padding-left: 20px;
    padding-right: 20px;
    padding-top: 12px;
    padding-bottom: 12px;
}

select {
    margin: 0.25rem 0 1rem;
    background-color: var(--input-color);
}

textarea {
    width: 100%;
    height: 150px;
    padding: 12px 20px;
    margin: 0.25rem 0 1rem;
    box-sizing: border-box;
    border: 2px solid var(--bkg-color);
    border-radius: 4px;
    background-color: var(--input-color);
    resize: none;
}

input[type=button], input[type=submit], input[type=reset], .button {
    background-color: var(--primary-color);
    border: none;
    color: white;
    padding: 16px 32px;
    border-radius: 4px;
    text-decoration: none;
    margin: 0.25rem 0 1rem;
    cursor: pointer;
    display: inline-block;
}

.date {
    font-size: 0.8rem;
}

h4.success {
    color: var(--secondary-color);
}

h4.error {
    color: var(--warning-color);
}

.notifications {
    list-style: none;
    margin: 0;
    padding: 0;
}

.notifications li {
    margin: 0;
    border-radius: 5px;
    background-color:var(--secondary-color);
    color: var(--text-color);
    padding: 20px 40px;
    margin: 10px auto;
    max-width: 600px;
}

.notifications li > strong {
    display: inline-block;
    width: 6rem;
    color: white;
}

/* Container for flexboxes */
.row {
    display: flex;
    flex-wrap: wrap;
}
  
  /* Create four equal columns */
.column {
    flex: 50%;
    padding: 20px;
}
  
@media screen and (max-width: 800px) {
    .column {
        flex: 100%;
    }
    .row {
        flex-direction: column;
    }
}