body {
    margin: 0;
    padding: 0;
    color: #263238;
    background-color: #263238;
    font-family: Helvetica, Arial, sans-serif;
    font-size: 14px;
}

h1 {
    font-size: 64px;
    text-align: center;
    margin: 0;
}

h2 {
    font-size: 64px;
    text-align: center;
    margin: 0 0 100px;
    padding-top: 106px;
}

h3 {
    font-size: 24px;
    text-align: center;
}

h4 {
    font-size: 18px;
    text-align: center;
}

.spacer {
    flex: 1;
}

button {
    border-width: 4px;
    border-style: solid;
    font-family: Helvetica, Arial, sans-serif;
    font-weight: bold;
    cursor: pointer;
}

.material-icons.md-18 { font-size: 18px; }
.material-icons.md-24 { font-size: 24px; }
.material-icons.md-36 { font-size: 36px; }
.material-icons.md-48 { font-size: 48px; }

.login-button, .registration-button {
    padding: 10px;
    font-size: 16px;
    width: 160px;
    margin: 0 10px;
}

.login-button {
    color: #263238;
    border-color: #80DEEA;
    background: #80DEEA;
}

.login-button:hover {
    border-color: #4DD0E1;
    background: #4DD0E1;
}

.registration-button {
    color: #80DEEA;
    border-color: #80DEEA;
    background: none;
}

.registration-button:hover {
    color: #4DD0E1;
    border-color: #4DD0E1;
}

.demo-button {
    color: #EC407A;
    border-color: #EC407A;
    background: none;
    padding: 20px;
    font-size: 18px;
}

.demo-button:hover {
    color: #E91E63;
    border-color: #E91E63;
}

#start {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    height: 100vh;
}

#header {
    padding: 20px;
    flex: none;
    display: flex;
    font-size: 18px;
}

#header nav ul {
    padding: 0;
}

#header nav li {
    list-style: none;
    display: inline;
    padding: 0 10px;

}

#header nav li a {
    color: #FAFAFA;
    text-decoration: none;
    font-weight: bold;
}

#header nav li:hover a, #header nav li.selected a {
    color: #80DEEA;
}

#jumbotron {
    background-color: #80DEEA;
    flex: 1;
    display: flex;
    flex-direction: row;
    overflow: hidden;
}

#jumbotron > div {
    flex: 0 0 50%;
    overflow: hidden;
    height: 100%;
}

#jumbotron .left {
    display: flex;
    flex-direction: column;
    align-items: center;
}

#jumbotron .left .info {
    margin-left: 20%;
    margin-right: 20%;
    text-align: center;
}

#jumbotron button:hover {
    background-color: #4DD0E1;
}

#jumbotron img {
    height: 100%;
    float: right;
}

#more {
    flex: 0 0 72px;
    text-align: center;
    color: #FAFAFA;
    font-size: 64px;
    font-weight: lighter;
}

#benefits {
    background-color: #C5E1A5;
    text-align: center;
    padding-bottom: 150px;
}

#benefits .grid {
    display: grid;
    grid-template-columns: 240px 240px 240px;
    grid-template-rows: 230px 230px;
    grid-gap: 15px;
    justify-items: stretch;
    align-items: stretch;
    justify-content: center;
}

#benefits .grid div {
    background-color: #DCEDC8;
    padding: 30px 20px;
    text-align: center;
}

#screenshots {
    background-color: #80DEEA;
    text-align: center;
    margin-top: 80px;
    padding-bottom: 150px;
}

#screenshots .grid {
    display: grid;
    grid-template-columns: 40% 40%;
    grid-template-rows: auto auto;
    grid-gap: 45px 15px;
    justify-items: stretch;
    align-items: stretch;
    justify-content: center;
    max-width: 1440px;
    margin: auto;
}

#screenshots img {
    width: 100%;
}

#screenshots .screenshot_caption, #screenshots .screenshot_explanation {
    background-color: #B2EBF2;
}

#screenshots .screenshot_caption {
    padding: 20px;
}

#screenshots .screenshot_explanation {
    padding: 100px;
}

#screenshots .screenshot_explanation h3, #screenshots .screenshot_explanation p {
    text-align: left;
}

#prices {
    background-color: #C5E1A5;
    text-align: center;
    margin-top: 80px;
}

#prices .grid {
    display: grid;
    grid-template-columns: 40% 40%;
    grid-template-rows: auto;
    justify-items: stretch;
    align-items: stretch;
    justify-content: space-evenly;
}

#prices .grid div {
    background-color: #DCEDC8;
    padding: 40px;
}

#prices .grid div .price {
    font-size: 80px;
    font-weight: bold;
    margin: 40px 0 20px;
}

#prices .grid div button {
    color: #263238;
    border-color: #263238;
    margin: 40px 0;
    background: none;
    padding: 20px;
    font-size: 18px;
}

#prices .grid div ul {
    list-style-type: none;
}

#prices button {
    margin-top: 100px;
    margin-bottom: 130px;
}

#prices button:hover {
    background-color: #AED581;
}

#about_us {
    background-color: #80DEEA;
    margin-top: 80px;
    padding: 80px 20px;
}

#about_us .grid {
    display: grid;
    grid-template-columns: 220px 220px;
    grid-template-rows: auto;
    justify-items: stretch;
    align-items: stretch;
    justify-content: space-evenly;
}

#about_us hr {
    border: none;
    border-top: #263238 solid 6px;
}

#about_us h3 {
    font-variant: all-small-caps;
    text-align: left;
}

#about_us li {
    list-style: none;
    font-weight: bold;
}

#about_us p {
    font-weight: bold;
    color: #263238;
}

#about_us a {
    color: #263238;
    text-decoration: none;
}

#about_us a:hover {
    color: #546E7A;
}

#legal, #privacy {
    background-color: #C5E1A5;
    padding: 100px 40px;
}

#legal a, #privacy a {
    color: #263238;
}

#privacy h4 {
    text-align: left;
}

#conversion #dialog {
    background-color: #80DEEA;
    width: 520px;
    height: 260px;
    margin: 25vh auto;
    padding: 50px;
}