css.css

*{
    padding: 0;
}
.flex{
    display: flex;
    flex-wrap: wrap;
    padding: 18px;
    width: 80%;
    margin: auto;
}
.flex >*{
     max-width: 500px;
     border: 1px solid black;
     padding: 12px;
}

.flex div p{
    padding: 12px;
}
.bg{
    background-image: url('https://cdn.pixabay.com/photo/2017/07/23/20/13/origami-2532622_960_720.jpg');
    height: 80vh;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: bottom;
    font-family: 'Roboto';
}

.bg h1{
    font-size: 40px;
    padding: 40px;
    margin: 0;
}
nav{
    display: flex;
    justify-content: space-around;
    background-color: rgba(37, 37, 37, 0.89);
    font-family: 'Roboto';
    box-shadow: rgba(50, 50, 93, 0.25) 0px 30px 60px -12px inset, rgba(0, 0, 0, 0.3) 0px 18px 36px -18px inset;}
.pp{
    font-family: 'Roboto';
    width: 80%;
    margin: auto;
}

nav a{
    text-decoration: none;
    color: white;
    padding: 12px;
    margin-top: 18px;
    font-family: 'Roboto';
    font-size: 20px;
    font-weight: 600;
}

nav a:hover{
    background-color: white;
    color: black;
    transition: all .5s ease;

}
.tit h2{
    font-size: 34px;

}




body {
    color: #333333;
    font-family:'Helvetica', arial;
    height:1500px;
}
.wrap {
    padding: 40px;
    text-align: center;
}
hr {
    clear: both;
    margin-top: 40px;
    margin-bottom: 40px;
    border: 0;
    border-top: 1px solid #aaaaaa;
}
h1 {
    font-size: 30px;
    margin-bottom: 40px;
}
p {
    margin-bottom: 20px;
}
.btn {
    background: #428bca;
    border: #357ebd solid 1px;
    border-radius: 3px;
    color: #fff;
    display: inline-block;
    font-size: 14px;
    padding: 8px 15px;
    text-decoration: none;
    text-align: center;
    min-width: 60px;
    position: relative;
    transition: color .1s ease;
}
.btn:hover {
    background: #357ebd;
}
.btn.btn-big {
    font-size: 18px;
    padding: 15px 20px;
    min-width: 100px;
}
.imgg{
    padding: 22px;
    margin: 32px;
}
.btn-close {
    color: #aaaaaa;
    font-size: 30px;
    text-decoration: none;
    position: absolute;
    right: 5px;
    top: 0;
}
.btn-close:hover {
    color: #919191;
}
.modal:target:before {
    display: none;
}
.modal:before {
    content:"";
    display: block;
    background: rgba(0, 0, 0, 0.6);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10;
}
.modal .modal-dialog {
    background: #fefefe;
    border: #333333 solid 1px;
    border-radius: 5px;
    margin-left: -200px;
    position: fixed;
    left: 50%;
    z-index: 11;
    width: 360px;
    -webkit-transform: translate(0, 0);
    -ms-transform: translate(0, 0);
    transform: translate(0, 0);
    -webkit-transition: -webkit-transform 0.3s ease-out;
    -moz-transition: -moz-transform 0.3s ease-out;
    -o-transition: -o-transform 0.3s ease-out;
    transition: transform 0.3s ease-out;
    top: 20%;
}
.modal:target .modal-dialog {
    top: -100%;
    -webkit-transform: translate(0, -500%);
    -ms-transform: translate(0, -500%);
    transform: translate(0, -500%);
}
.modal-body {
    padding: 20px;
}
.modal-header, .modal-footer {
    padding: 10px 20px;
}
.modal-header {
    border-bottom: #eeeeee solid 1px;
}
.modal-header h2 {
    font-size: 20px;
}
.modal-footer {
    border-top: #eeeeee solid 1px;
    text-align: right;
}