main.css

/********************************************************************************************************************
*
* General CSS
*
*********************************************************************************************************************/
body {
    margin: 0;
    padding: 0;
    font-family: 'Montserrat', sans-serif;
}

header {
    background: linear-gradient(rgba(8, 61, 119, 0.5), rgba(8, 61, 119, 0.2)), url('https://happygamer.com/wp-content/uploads/2019/05/pexels-photo-735911.jpeg');
    background-size: cover;
    background-position: center;
    height: 450px;
    padding: 0 3%;
}

header > figure{
    margin: 0;
}

header > figure > a > img {
    height: 90px;
    float: left;
    margin: 1%;
}

header > nav {
    width: 100%;
    line-height: 60px;
}

header > nav > ul {
    float: right;
    margin: 1%;
}

header > nav > ul > li {
    display: inline-block;
    margin-left: 25px;
}

header > nav > ul > li.username {
    margin-left: 10px;
}

header > nav > ul > li > a {
    text-decoration: none;
    color: #FFF;
    padding: 1%;
}

header > nav > ul > li > img.avatar {
    width: 35px;
    height: 35px;
    border-radius: 50%;
}

header > h1 {
    font-size: 48px;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: absolute;
    top: 200px;
    width: 94%;
    text-align: center;
    color: #FFF;
}

main {
    background: #F1FAFE;
    padding: 1% 3%;
    overflow: auto;
}

footer {
    border-top: solid #119DA4;
    background: #001242;
    color: #FFF;
}

footer > p {
    margin: auto;
    width: 60%;
    text-align: center;
    padding: 5%;
}

.error-message {
    padding: 8px 35px 8px 14px;
    margin-bottom: 18px;
    color: #FFF;
    background-color: #fd4b5a;
    border-radius: 4px;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
}

/********************************************************************************************************************
*
* Home Page CSS
*
*********************************************************************************************************************/
main {
    min-height: 250px;
}

main > form > input.search {
    padding: 10px;
    font-size: 1rem;
    float: left;
    width: 91.5%;
    margin: 1%;
    border: none;
    outline: none;
    border-radius: 10px;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
}

main > form > button.search {
    float: left;
    width: 4%;
    padding: 10px;
    background: #1d7874;
    color: white;
    font-size: 1rem;
    border: none;
    border-radius: 10px;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
    margin-top: 1%;
    cursor: pointer;
}

main > a > article.question {
    background: #FFF;
    width: 48%;
    margin: 1%;
    float: left;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
    border-radius: 10px;
    min-height: 180px;
    position: relative;
    text-decoration: none;
    color: #000000;
}

main > a > article:hover.question {
    box-shadow: 0 8px 16px 0 rgba(0,0,0,0.2);
}

main > a > article.question > h2 {
    padding: 0 20px;
    float: left;
    color: #001242;
    font-weight: 700;
}

main > a > article.question > p {
    margin: 0;
    padding: 5px;
    color: white;
    background-color: #4bb3fd;
    text-align: center;
    border-radius: 10px 10px 0 0;
}

main > a > article.question > small.user {
    position: absolute;
    bottom: 20px;
    left: 20px;
    font-weight: 400;
}

main > a > article.question > small.date {
    position: absolute;
    bottom: 20px;
    right: 20px;
    font-weight: 400;
}

main > a > article.question > small > i#bronze {
    color:rgb(145, 94, 1);
}

main > a > article.question > small > i#silver {
    color:silver;
}

main > a > article.question > small > i#gold {
    color:gold;
}

@media (max-width: 870px) {
    main > form > input.search {
        width: 80%;
        margin: 1%;
    }
    
    main > form > button.search {
        float: left;
        width: 10%;
    }
}

@media (max-width: 700px) {
    main > a > article.question {
        width: 98%;
        margin: 1%;
    }
}

/********************************************************************************************************************
*
* Answers Page CSS
*
*********************************************************************************************************************/
main > a.lightbox {
	display: none;
	position: fixed;
	z-index: 999;
	width: 100%;
	height: 100%;
	text-align: center;
	top: 0;
	left: 0;
	background: rgba(0,0,0,0.8);
}

main > a.lightbox > img {
	max-width: 90%;
	max-height: 80%;
	margin-top: 2%;
}

main > a.lightbox:target {
	outline: none;
	display: block;
}

main > form > label {
    margin: 1%;
}

main > form.textarea > textarea {
    width: 96%;
    margin: 1%;
    font-family: 'Montserrat', sans-serif;
    font-size: 1rem;
    padding: 15px;
    resize: none;
    height: 50px;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
    border: none;
}

main > form.textarea > input[type=submit] {
    margin: 1%;
    border: none;
    border-radius: 10px;
    color: #FFF;
    font-weight: 700;
    background-color: #4bb3fd;
    padding: 10px 20px;
    cursor: pointer;
}

main > article.answers {
    background: #FFF;
    width: 98%;
    margin: 1%;
    float: left;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
    border-radius: 10px;
    min-height: 250px;
    position: relative;
    text-decoration: none;
    color: #000000;
}

main > article.answers > p.is {
    margin: 0;
    padding: 5px;
    text-align: center;
    border-radius: 10px 10px 0 0;
    color: #FFF;
}

main > article.answers > p.is-correct {
    background-color: #55AE3A;
}

main > article.answers > p.is-inappropriate {
    background-color: #fd4b5a;
}

main > article.answers > p.body {
    padding: 0 20px 20px 20px;
    float: left;
    color: #001242;
    font-weight: 700;
    width: 97%;
}

main > article.answers > small.user {
    position: absolute;
    bottom: 60px;
    left: 25px;
    font-weight: 400;
}

main > article.answers > small.date {
    position: absolute;
    bottom: 60px;
    right: 25px;
    font-weight: 400;
}

main > article.answers > small > i#bronze {
    color:rgb(145, 94, 1);
}

main > article.answers > small > i#silver {
    color:silver;
}

main > article.answers > small > i#gold {
    color:gold;
}

main > article.answers > form.mark-correct {
    position: absolute;
    bottom: 10px;
    left: 20px;
}

main > article.answers > form.mark-correct > input[type=submit] {
    border: none;
    border-radius: 10px;
    color: #FFF;
    font-weight: 700;
    background-color: #55AE3A;
    padding: 15px 30px;
    cursor: pointer;
}

main > article.answers > form.mark-inappropriate {
    position: absolute;
    bottom: 10px;
    right: 20px;
}

main > article.answers > form.mark-correct > input[type=submit] {
    border: none;
    border-radius: 10px;
    color: #FFF;
    font-weight: 700;
    background-color: #55AE3A;
    padding: 15px 30px;
    cursor: pointer;
}

main > article.answers > form.mark-inappropriate > input[type=submit] {
    border: none;
    border-radius: 10px;
    color: #FFF;
    font-weight: 700;
    background-color: #fd4b5a;
    padding: 15px 30px;
    cursor: pointer;
}

main > article.answers > form.rate {
    padding: 0 20px 100px 20px;
    float: left;
}

main > article.answers > p.avg-rate {
    padding-left: 25px;
    color: #001242;
}

/********************************************************************************************************************
*
* Register Page CSS
*
*********************************************************************************************************************/
main > section {
    margin: auto;
    width: 60%;
    text-align: center;
}

main > section > form.register-login {
    padding: 5%;
    background: #fff;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
    border-radius: 10px;
    margin-bottom: 5%;
}

main > section > form.register-login > p > input[type=text] {
    width: 100%;
    padding: 12px 20px;
    margin: 8px 0;
    box-sizing: border-box;
    border: none;
    border-bottom: 2px solid #4bb3fd;
    outline: none;
    font-family: 'Montserrat', sans-serif;
    font-size: 1rem;
}

main > section > form.register-login > p > input[type=password] {
    width: 100%;
    padding: 12px 20px;
    margin: 8px 0;
    box-sizing: border-box;
    border: none;
    border-bottom: 2px solid #4bb3fd;
    outline: none;
    font-family: 'Montserrat', sans-serif;
    font-size: 1rem;
}

main > section > form.register-login > p > input[type=submit] {
    border: none;
    border-radius: 10px;
    color: #FFF;
    font-weight: 700;
    background-color: #001242;
    padding: 15px 30px;
    cursor: pointer;
}

/********************************************************************************************************************
*
* Create Question Page CSS
*
*********************************************************************************************************************/
main > section > form.newquestion {
    padding: 5%;
    background: #fff;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
    border-radius: 10px;
    margin-bottom: 5%;
}

main > section > form.newquestion > input[type=text] {
    width: 100%;
    padding: 12px 20px;
    margin: 8px 0;
    box-sizing: border-box;
    border: none;
    border-bottom: 2px solid #4bb3fd;
    outline: none;
    font-family: 'Montserrat', sans-serif;
    font-size: 1rem;
}

main > section > form.newquestion > textarea {
    width: 96%;
    margin: 1%;
    font-family: 'Montserrat', sans-serif;
    font-size: 1rem;
    padding: 15px;
    resize: none;
    height: 50px;
    border: none;
    border-bottom: 2px solid #4bb3fd;
    outline: none;
}

main > section > form.newquestion > p > input[type=submit] {
    border: none;
    border-radius: 10px;
    color: #FFF;
    font-weight: 700;
    background-color: #001242;
    padding: 15px 30px;
    cursor: pointer;
}