*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

/*
Section Main
*/

section.main_main{
    background-image: url('images/about.png');
    min-height: 750px;
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

.Header{
    overflow: hidden;
    background-color: rgba(255, 255, 255, 0.8);
    position: fixed;
    top: 0;
    padding: 20px 0;
    display: block;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid #0f3957;
}

.center_main{
    /*max-width: 1600px;*/
    margin: 0 auto;
    padding: 0 2%;
    display: flex;
    flex-wrap: wrap;
    text-decoration: none;
}

.logo{
    color: #0f3957;
}

.logo h2{
    font-weight: normal;
    font-size: 20px;
}

.menu{
    width: 80%;
    text-align: right;
}

.menu a{
    color: #0f3957;
    font-size: 20px;
    text-decoration: none;
    margin-right: 20px;
}

.menu a:hover{
    color: #ff6347;
}

.main__info{
    width: 100%;
    margin: 0 0;
    text-align: center;
    display: flex;
    flex-wrap: wrap;
}

.main__info h2{
    color: white;
    margin: 300px 0;
    font-weight: bold;
    font-size: 60px;
    -webkit-text-stroke: 2px black;
}

.main__info p{
    color: white;
    margin-top: 20px;
    margin-bottom: 50px;
    font-size: 24px;
}

.main_info_left{
    width: 70%;
}

.logo_image{
    text-align: center;
    margin-top: 100px;
    margin-bottom: 20px;
}

.main_info_right{
    width: 30%;
    padding: 0 30px;
    text-align: justify;
    background-image: linear-gradient(to bottom right, rgba(11, 43, 65, 0.7), rgba(18, 73, 109, 0.7));
}

/* Section Research Slideshow */
Section.Research{
    padding: 50px 0;
}

Section.Research h2{
    color: #0f3957;
    text-align: center;
    padding-top: 30px;
    font-weight: bold;
    font-size: 45px;
    margin-bottom: 20px;
}

/* Slideshow container */
.center_research{
    max-width: 850px;
    position: relative;
    margin: auto;
    text-align: center;
}

/* Hide the images by default */
.research_topics {
    display: none;
}

/* Next & previous buttons */
.prev, .next {
    cursor: pointer;
    position: absolute;
    top: 50%;
    width: auto;
    margin-top: -22px;
    padding: 16px;
    color: white;
    font-weight: bold;
    font-size: 18px;
    transition: 0.6s ease;
    border-radius: 0 3px 3px 0;
    user-select: none;
}

/* Position the "prev button" to the left */
.prev {
    left: 0;
    border-radius: 3px 0 0 3px;
}

/* Position the "next button" to the right */
.next {
    right: 0;
    border-radius: 3px 0 0 3px;
}

/* On hover, add a black background color with a little bit see-through */
.prev:hover, .next:hover {
    background-color: rgba(0,0,0,0.8);
}

/* Caption text */
.text {
    color: #f2f2f2;
    font-size: 25px;
    padding: 8px 12px;
    position: absolute;
    bottom: 8px;
    width: 100%;
    text-align: center;
}

/* Number text (1/3 etc) */
.numbertext {
    color: #f2f2f2;
    font-size: 12px;
    padding: 8px 12px;
    position: absolute;
    top: 0;
}

/* The dots/bullets/indicators */
.dot {
    cursor: pointer;
    height: 15px;
    width: 15px;
    margin: 0 2px;
    background-color: #bbb;
    border-radius: 50%;
    display: inline-block;
    transition: background-color 0.6s ease;
}

.active, .dot:hover {
    background-color: #717171;
}

/* Fading animation */
.fade {
    animation-name: fade;
    animation-duration: 1.5s;
}

@keyframes fade {
    from {opacity: .4}
    to {opacity: 1}
}

/*Section PGP*/
Section.PGP{
    padding: 50px 0;
}

.center_PGP{
    text-align: center;
    display: flex;
    flex-wrap: wrap;
}

.PGP_topics{
    display: flex;
    background-image: linear-gradient(to bottom right, #0f3a57, #1a6699);
    width: 31.33%;
    margin: 0 1%;
}

.PGP_topics .material-icons{
    color: white;
    font-size: 200px;
}

.PGP_topics_in {
    display: flex;
    flex-direction: column;
    font-size: 20px;
    color: white;
    padding: 30px 30px;
}

.PGP_topics_in div {
    padding: 10px;
}

.button {
    border: none;
    outline: 0;
    display: inline-block;
    padding: 8px 40px;
    color: white;
    background-color: #000;
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
}

.button:hover {
    background-color: #555;
}

/*Section Contact*/
Section.Contact{
    padding: 50px 0;
}

.center_Contact{
    text-align: center;
    display: flex;
    flex-wrap: wrap;
}

.Contact_info{
    width: 42%;
    margin: 0 4%;
    text-align: left;
    padding: 10px 100px;
}

.Contact_info h2{
    color: #0f3957;
    font-weight: bold;
    font-size: 45px;
    margin-bottom: 20px;
}

.Contact_info h3{
    color: #0f3957;
    font-weight: bold;
    font-size: 35px;
    margin-top: 20px;
}

input[type=text], select {
    width: 100%;
    padding: 12px 20px;
    margin: 8px 0;
    display: inline-block;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

textarea{
    width: 100%;
    padding: 12px 20px;
    margin: 8px 0;
    display: inline-block;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

input[type=submit] {
    background-color: #0f3957;
    color: white;
    padding: 14px 20px;
    margin: 8px 0;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

input[type=submit]:hover {
    background-color: #ff6347;
}

.Contact_info_form {
    border-radius: 5px;
    background-color: #f2f2f2;
}

.Contact_info .material-icons{
    color: #1a6699;
    padding-right: 10px;
}

/*Section OpenPos*/
Section.OpenPos{
    padding: 80px 0;
}

.center_OpenPos{
    text-align: center;
    display: flex;
    flex-wrap: wrap;
}

.OpenPos_info{
    width: 31.3%;
    margin: 0 1%;
    text-align: justify;
    padding: 10px 100px;
}

.OpenPos_info h2{
    color: #0f3957;
    font-weight: bold;
    font-size: 45px;
    margin-bottom: 20px;
}

.OpenPos_info h3{
    color: #0f3957;
    font-weight: bold;
    font-size: 35px;
    margin-bottom: 20px;
}

/*Section Group*/
Section.Group{
    padding: 80px 0;
}

Section.Group h2{
    color: #0f3957;
    font-weight: bold;
    font-size: 35px;
    margin-bottom: 20px;
}

Section.Group h3{
    font-weight: bold;
    font-size: 25px;
    margin-bottom: 20px;
}

.center_Group{
    color: #0f3957;
    text-align: center;
    display: block;
    padding: 20px;
}

.Group_level{
    text-align: center;
    display: flex;
    flex-wrap: wrap;
}

.Group_info{
    display: flex;
    width: 23%;
    margin: 10px 1%;
    text-align: left;
    background-image: linear-gradient(to bottom right, #0f3a57, #1a6699);
    padding: 20px 20px;
}

.Group_info_in{
    color: white;
    width: 100%;
}

.avatar{
    text-align: center;
}

.avatar .material-icons{
    color: white;
    font-size: 200px;
}

/*Section Publications*/
Section.Publications{
    padding: 80px 0;
}

.Left_Publications{
    text-align: left;
    padding: 10px 100px;
}

.Left_Publications h2{
    color: #0f3957;
    font-weight: bold;
    font-size: 45px;
    margin-bottom: 20px;
}

.Left_Publications p{
    color: #0f3957;
    font-weight: normal;
    font-size: 20px;
    margin-bottom: 40px;
}

@media screen and (max-width: 768px){
      .main_info_left{
          width:100%;
      }
      .main_info_right{
          width:100%;
      }
      Section.Research h2{
          padding-top: 80px;
      }
      .Contact_info{
          width: 100%;
      }
      .PGP_topics{
          width: 100%;
          margin-top: 30px;
      }
      .Group_info{
          width: 100%;
      }
}