html, body {
    padding: auto;
    font-family: Arial, Helvetica, sans-serif, cursive;
    font-size: 13pt;
    background-color: white;
   
    
    
}

h1 {
    font-size: 15pt;
    color: #20bcd5;
    text-align: center;
    padding: 18px 0 18px 0;
    margin: 0 0 10px 0;
}
h1 span {
    border: 4px dashed #20bcd5;
    padding: 10px;
}
p {
    padding: 0;
    margin: 0;
}
nav ul {
    margin-left: auto;
    margin-right: auto;
}
nav li {
    display: inline-block;
    height: 100%;
    width: auto;
}

nav li a {
    color: #ff1e4b;
    font-size: 1em;
    text-decoration: none;
}


#header {
    background-image: url("https://www.sololearn.com/Uploads/header.jpg");
    background-size: cover;
    text-decoration: none;
}
#header a{
    text-decoration: none;
}
#header img {
    display: block;
    width: 80px;
    height: 80px;
    margin: auto;
}
#header p {
    font-size: 25pt;
    color: #3b464c;
    padding-top: 5px;
    margin: 0;
    font-weight: bold;
    text-align: center;
}
.sectionMenu{
    color: black;
    font-size:1.3em;
    font-weight: bold;
    text-align:center;

    padding: 20px;
    margin: 10px;
    margin-right: 40px;
    border-radius: 10px;  
	  display: inline-block;
    overflow: hidden;
    text-align: center;
   

}
.section {
    color: black;
    font-size:20px;
    font-weight: bold;
    background-color: #fff;
    padding: 20px;

    margin-bottom: 10px;
    border-radius: 10px;  
	  padding-top:auto;    
}
.research {
    color: black;
    font-size:16px;
    font-weight: bold;
    background-color: #fff;
    padding: 15px;
    margin-bottom: 10px;
    border-radius: 10px;  
}
.section h2{
     font-family: Arial, Helvetica, sans-serif;
}
.face {
    transform: scale(0.4);
    margin: auto;
    display: block;
    margin-top: -35px;
    margin-bottom: -25px;
}
.img-circle {
    border: 3px solid white;
    border-radius: 50%;
}
#contacts img {
    height: 50px;
    width: 50px;
    margin-left: 7px;
    margin-right: 7px;
}
#contacts a {
    text-decoration: none;
}
#contacts img:hover {
    opacity: 0.8;
}
#contacts img {
    display: inline;
}
#contacts {
    text-align: center;
}
textarea {
    height: 100px;
}
input, textarea {
    margin-bottom: 10px;
    font-size: 11pt;
    padding: 15px 10px 10px;
    border: 1px solid #cecece;
    background-color: #efefef;
    color: #787575;
    border-radius: 5px;
    width: 70%;
    outline: none;
}
.submit {
    background-color: #3fb6b2;
    padding: 12px 45px;
    border-radius: 5px;
    cursor: pointer;
    color: #ffffff;
    border: none;
    outline: none;
    margin: 0;
    font-weight: bold;
}
.submit:hover {
    background-color: #43a09d;
}
form {
    text-align: center;
    margin-top: 0;
}
hr {
    border: 0;
    height: 1px;
    background: #f36f48;
}
iframe, audio {
    display: block;
    margin: 0 auto;
    border: 3px solid #3fb6b2;
}
progress {
    width: 70%;
    height: 20px;
    color: #3fb6b2;
    background: #efefef;
}
progress::-webkit-progress-bar {
    background: #efefef;
}
progress::-webkit-progress-value {
    background: #3fb6b2;
} 
progress::-moz-progress-bar {
    color: #3fb6b2;
    background: #efefef;
}
li {
    margin-bottom: 15px;
    font-weight: normal;
}
table {
    width: 100%;
}
table, th, td {
    border: 2px solid #cecece;
    border-collapse: collapse;
    text-align: center;
    table-layout: fixed;
}
.selected {
    background-color: #f36f48;
    font-weight: bold;
    color: white;
}
#myBtn {
  display: none; /* Hidden by default */
  position: fixed; /* Fixed/sticky position */
  bottom: 20px; /* Place the button at the bottom of the page */
  right: 30px; /* Place the button 30px from the right */
  z-index: 99; /* Make sure it does not overlap */
  border: none; /* Remove borders */
  outline: none; /* Remove outline */
  background-color: red; /* Set a background color */
  color: white; /* Text color */
  cursor: pointer; /* Add a mouse pointer on hover */
  padding: 15px; /* Some padding */
  border-radius: 10px; /* Rounded corners */
  font-size: 18px; /* Increase font size */
}
#myBtn:hover {
  background-color: #555; /* Add a dark-grey background on hover */
}
.papers {
    color: black;
    font-family: Arial, Helvetica, sans-serif;
    font-size:16px;
    font-weight: normal;
    background-color: #fff;
    padding: 20px;
    margin-bottom: 10px;
    border-radius: 10px;  
}
.news {
    color: black;
    font-family: Arial, Helvetica, sans-serif;
    font-size:1em;
    font-weight: normal;
    background-color: #fff;
    
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 10px;
    border-radius: 10px;
    text-align: center;
    display: block;
}
img {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 50%;
    object-fit: contain;    
}
.teaching {
    font-family: Arial, Helvetica, sans-serif;
    font-size:1em;
    font-weight: normal;
    text-align:left;
    background-color: #fff;
    padding: 20px;
    margin-bottom: 10px;
    border-radius: 10px;  
}
.teaching h1{
    color: black;
    font-size:1.2em;
    font-weight: normal;
    padding: 10px;
    margin-bottom: 5px;
    border-radius: 5px;  
}
.teaching li{
    color: black;
    font-size:1em;
    font-weight: normal;
    text-align:left;
}
.copyright {
    font-size: 8pt;
    text-align: left;
    padding-bottom: 10px;
    color: grey;
    padding-left: 20px;
}


.sectionMenu a {
  float: left;
  display: block;
  color: black;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.sectionMenu a:hover {
  background-color: #ddd;
  color: black;
}


.sectionMenu .icon {
  display: none;
}

@media screen and (max-width: 300px) {
  .sectionMenu a:not(:first-child) {display: none;}
  .sectionMenu a.icon {
    float: right;
    display: block;
  }
}

@media screen and (max-width: 300px) {
  .sectionMenu.responsive {position: relative;}
  .sectionMenu.responsive .icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  .sectionMenu.responsive a {
    float: none;
    display: block;
    text-align: left;
  }
}


.topnav {
  overflow: hidden;
  background-color: #333;
  
}


.topnav a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.topnav a:hover {
  background-color: #ddd;
  color: black;
}
.active {
  background-color: #333;
  color: white;
  display: block;
}
.topnav .icon {
  display: none;
}

@media screen and (max-width: 600px) {
  .topnav a:not(:first-child) {display: none;}
  .topnav a.icon {
    float: right;
    display: block;
  }
}

@media screen and (max-width: 600px) {
  .topnav.responsive {position: relative;}
  .topnav.responsive .icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  .topnav.responsive a {
    float: none;
    display: block;
    text-align: left;
  }
}

a {    
    color:  #ff1e4b;
    font-size: 1em;
    text-decoration: none;
}

nav li a:hover {
    color: #dd5771;
}