@import url('https://fonts.googleapis.com/css?family=Raleway:200,200i,400,400i,600,600i,800,800i,900,900i');
*{margin-left: 0;}
*{margin-right: 0;}
*{text-align: center;}


header img {
        
        margin-top: 5rem;
        display: block;
        margin-left: auto;
        margin-right: auto;
        border-radius: none; 
}
header nav {
    width: 100%;
    background: #f7d830;
          color: #000000;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
    top: 0;
    left: 0;
    position: fixed;
}
header nav ul {
    width: 75%;
    padding: 0px;
    display: inline-flex;
    justify-content: space-around;
    border: 0;
    margin: 0;
}   
header nav ul li {
    list-style-type: none;
    width: 100%;
    height: 100%;
}
header nav ul li a {
          width: 100%;
          text-align: center;
          text-decoration: none;
          color: #333;
          padding-top: 1rem;
    padding-bottom: 1rem;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
          font-size: 1.1rem; 
          display: block;
          letter-spacing: 2px;
          font-family: 'Roboto', sans-serif;
          font-weight: 400;
            height: 100%;
}
body {
          background: #000000;
          font-family: 'Raleway', sans-serif;
          color: #fff;
}
h4 {
          text-align: center;
          text-decoration: none;
          font-weight: 600;
          color: #fff;}

}
div h5 ul li {
        list-style-type: none;
}
 h5 ul li {
        list-style-type: none;
}
  ul li {
        list-style-type: none;
}
nav ul li a:hover {
          background: #ddd; color: #fff;
}
h1 {
          text-align: center; 
          font-size: 3rem;
}
h2 {
          font-size: 2.5rem;
         text-align: center; 
         font-style: italic;
         padding: 0.1rem;
}
h4 {
          font-size: 1.5rem;
          font-weight: 600;
          font-variant: ;
}          
h3 {
          font-size: 1.9rem;
          text-align: center;
          font-weight: 800;   
          color: #b6f7fc;
          padding: 0.1rem;



}
footer {
          background:#000;
          border-top:2px solid #b5bfbf;
          padding:8px 0;
          width:100%;
          font-size: 0.7rem;
          text-align: center
          font-weight: 200;
}
main img {
          width: 30%;
          height: auto;
          border-radius: 50%;
          display: block;
         margin-left: auto;
         margin-right: auto;
         padding: 50px;
}
img:hover {
     opacity: 0.5;
}

.materias{
          text-align: center;
          text-decoration: none;
          background: #0a005c;
          color: #fcf1b6;
          display: block;
          padding:1rem;
}
.materias h3{
          color: #b6f7fc;
}
.materias h4{
          color: #b6f7fc;
          font-style: italic;
}
.materias h5{
          color: #ddd;

}