styles.css

/* importing fonts from google fonts */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Poppins", Trebuchet MS;
}

body {
    min-height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.5),
                rgba(0, 0, 0, 0.5)), url(img/home.jpg) no-repeat;
    background-size: cover;
    background-position: center center;
}

body.about {
    min-height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.7),
                rgba(0, 0, 0, 0.7)), url(img/home.jpg) no-repeat;
    background-size: cover;
    background-position: center center;
}

body.speaker {
    min-height: 100vh;
    background: url(img/speaker.jpg) no-repeat;
    background-size: cover;
    background-position: center center;
}

body.audience {
    min-height: 100vh;
    background: url(img/audience.jpg) no-repeat;
    background-size: cover;
    background-position: center center;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 100px;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
}

.logo {
    font-size: 32px;
    color: #fff;
    text-decoration: none;
    font-weight: 700;
}

.navbar a {
    position: relative;
    font-size: 18px;
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    margin-left: 40px;
}

/* sliding animation on navbar */
.navbar a::before {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    width: 0;
    height: 2px;
    background-color: greenyellow;
    transition: .3s;
}

.navbar a:hover::before {
    width: 100%;
}

main {
    margin: 0 100px;
    padding-top: 100px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: calc(100vh - 81.6px);
}

.mainblock {
    margin: 3% 100px;
    padding-top: 7%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

h2 {
    margin: 5% 0 1% 0;
    color: greenyellow;
    text-shadow: -1px -1px 20px rgba(0, 0, 0);
}

.main-wel {
    margin: 2% auto;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
}

.welcome {
    display: flex;
    flex-direction: column;
    background-color: #fff;
    width: 40%;
    border: 5px solid greenyellow;
    border-radius: 10px;
}

span {
    font-family: Trebuchet MS;
    color: greenyellow;
}

.wel-message {
    width: 80%;
    margin: 30px auto;
    font-size: 35px;
    font-weight: 900;
}

.about-btn {
    margin: 0 auto 30px auto;
    width: 120px;
    justify-items: center;
}

.abt-block a, .reg-block a {
    text-align: center;
    text-decoration: none;
    font-weight: 500;
    color: #fff;
}

.abt-block {
    display: block;
    width: 120px;
    height: 40px;
    font-size: 16px;
    cursor: pointer;
    border: transparent;
    border-radius: 10px;
    background-color: greenyellow;
}

.abt-block a:hover {
    color: greenyellow;
}

.abt-block:hover {
    border: 2px solid greenyellow;
    border-radius: 5px;
    background-color: #fff;
}

.register {
    display: flex;
    flex-direction: column;
    background-color: transparent;
    width: 40%;
    border-radius: 10px;
}

.reg-message {
    width: 80%;
    margin: 30px 75px;
    font-size: 35px;
    font-weight: 900;
    color: #fff;
}

.reg-message span {
    font-family: monospace;
    font-size: 40px;
    font-style: italic;
}

.reg-cg h2 {
    margin-top: 2%;
}

.reg-btn {
    margin: 0 auto 0px auto;
    width: 50%;
    display: flex;
    flex-direction: row;
}

.reg-block {
    position: relative;
    display: block;
    min-width: 120px;
    height: 40px;
    font-size: 16px;
    cursor: pointer;
    border: 2px solid greenyellow;
    border-radius: 10px;
    background-color: transparent;
}

.reg-block.speaker {
    margin-right: 50px;
}

.reg-block.audience {
    margin-left: auto;
}

.reg-block a:hover {
    color: #fff;
}

.reg-block:hover {
    border-radius: 10px;
    background-color: greenyellow;
}

footer {
    text-align: center;
    font-size: 12px;
    background-color: rgba(0, 0, 0, 0.2);
    color: white;
    padding: 20px;
}

/*********************************** about.html styles *********************************/
.about-photo {
    width: 300px;
    height: 400px;
    object-fit: cover;
    border: 2px solid greenyellow;
    border-radius: 5px;
    float: left;
    margin-right: 20px;
}

.about-heading {
    color: greenyellow;
}

.about>p {
    color: #fff;
    overflow: hidden;
}

.category {
    margin: 3% auto 0% auto;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.category em {
    color: greenyellow;
    font-weight: 500;
}

.container {
    margin-top: 7%;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
}

.cg {
    display: flex;
    flex-direction: column;
}

.reg-cg {
    color: #fff;
    margin: 3% 100px;
    text-align: center;
}

.reg-cg em {
    color: greenyellow;
}

.reg-cg span {
    font-family: monospace;
    font-style: bold;
    font-size: 20px;
}

.cg-photo  {
    width: 350px;
    height: 350px;
    object-fit: cover;
    border: 2px solid greenyellow;
    border-radius: 5px;
}

.cg-btn {
    margin: 30px auto 0 auto;
    justify-items: center;
}

.cg-block {
    display: block;
    position: relative;
    width: 100px;
    height: 40px;
    font-size: 16px;
    cursor: pointer;
    border-radius: 10px;
    border: transparent;
    background-color: greenyellow;
}

.cg-block a {
    text-align: center;
    text-decoration: none;
    font-weight: 500;
    color: #fff;
}

.cg-block a:hover {
    color: greenyellow;
}

.cg-block:hover {
    border: 2px solid greenyellow;
    border-radius: 10px;
    background-color: #fff;
}

.category>p {
    margin: 0% 10% 0% 10%;
    color: #fff;
}

p.info-start {
    margin-top: 5%;
}

p.info-end {
    margin-bottom: 2%;
}

/* sessions & events container styles ************/
.sessions, .events {
    margin-top: 3%;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
}

.events {
    width: 100%;
    margin: 2% 10px;
    justify-content: space-between;
}

.session h3, .event h3 {
    color: #fff;
    margin: 20px auto;
}

.event h3 {
    text-shadow: 1px 1px 20px rgba(0, 0, 0);
}

.session, .event {
    display: flex;
    flex-direction: column;
}

.ssh-photo, .event-photo {
    width: 350px;
    height: 350px;
    object-fit: cover;
    border: 2px solid greenyellow;
    border-radius: 5px;
}

.prices {
    margin: 3% auto;
    border-collapse: separate;
    border-spacing: 5px 10px;
}

.prices td {
    color: #fff;
    text-align: center;
}

.prices th {
    color: greenyellow;
    text-align: center;
}

/******************************* registration.styles **************************************/
.registration {
    padding-top: 2%;
}

/******************************* contact.html styles **************************************/
.form {
    padding-top: 0;
    margin-left: 5%;
    justify-content: center;
}

.form-details {
    display: flex;
    flex-direction: column;
    width: 500px;
}

.form-details input, textarea {
    border: 2px solid greenyellow;
    border-radius: 5px;
    margin: 10px 0;
    background-color: #fff;
    height: 50px;
}

textarea {
    height: auto;
    padding: 10px 0;
}

.send-btn {
    width: 120px;
    height: 40px;
    margin-top: 10px;
    align-self: center;
    color: #fff;
    background-color: greenyellow;
    border: 0px;
    border-radius: 10px;
    font-size: 16px;
    cursor: pointer;
}

.send-btn:hover {
    color: greenyellow;
    background-color: #fff;
    border: 2px solid greenyellow;
    border-radius: 5px;
    font-size: 16px;
}

.msg {
    margin-right: 5%;
}

.form-details h2 {
    color: #fff;
    align-self: center;
    text-shadow: 2px 2px 15px #fff;
}

.fields {
    text-indent: 20px;
}

.msg-photo, .tokyo-photo  {
    width: 500px;
    height: 360px;
    object-fit: cover;
    border: 2px solid greenyellow;
    border-radius: 5px;
}


/****************************** Speaker and Audience html styles ********************************/
.form-table {
    margin: 2.5% 0;
    padding: 20px;
    border: 2px solid greenyellow;
    border-radius: 5px;
    border-collapse: separate;
    border-spacing: 10px;
    background-color: #fff;
}

table td, table th {
    margin: 0;
    border: 0;
    color: rgba(0, 0, 0, 0.7);
}

table th {
    text-align: right;
}

input {
    border: 2px solid greenyellow;
    margin: 8px;
    height: 30px;
    accent-color: rgb(14, 151, 14);
    cursor: pointer;
}

.user-details {
    width: 275px;
    text-indent: 10px;
    border-radius: 5px;
}

#gender {
    margin: 8px;
    height: 30px;
    border: 2px solid greenyellow;
    border-radius: 5px;
    vertical-align: middle;
    accent-color: rgb(14, 151, 14);
}

.note {
    color: greenyellow;
    text-align: center;
    font-family: monospace;
    font-size: 16px;
}

.rad {
    display: inline-block;
    vertical-align: middle;
}

.td-span {
    text-align: center;
}

td>em {
    color: greenyellow;
    font-family: monospace;
    font-size: 16px;
    font-weight: bold;
    font-style: normal;
}

td>p {
    margin-left: 8px;
    word-break: normal;
    width: 275px;
}

#display {
    color:rgba(200, 18, 18, 0.7);
    font-family: monospace;
    font-size: 16px;
    font-weight: bold;
    word-wrap: break-word;
}

.sub-reg, .cost {
    font-weight: 500;
    font-size: 16px;
    min-width: 120px;
    border: 0;
    border-radius: 5px;
    height: 40px;
    color: #fff;
    background-color: greenyellow;
    cursor: pointer;
}

.cost {
    border: 2px solid rgba(0, 0, 0, 0.7);
    color: rgba(0, 0, 0, 0.7);
    background-color: #fff;
}

.cost:hover {
    border: 2px solid greenyellow;
    color: greenyellow;
    border-radius: 10px;
}

.sub-reg:hover {
    border: 2px solid #fff;
    border-radius: 10px;
    box-shadow: 5px 5px 5px rgba(0, 0, 0, 0.3);
}

.tokyo {
    padding-bottom: 4% ;
}

.tokyo-photo {
    width: 600px;
    border-radius: 5px;
    border-color: #fff;
}

.tokyo h3 {
    margin-bottom: 10px;
    color: greenyellow;
    text-align: center;
    text-shadow: 2px 2px 15px #fff;
    font-family: Trebuchet MS;
    font-size: 32px;
}