index.css

@import url(https://use.fontawesome.com/releases/v5.6.3/css/all.css);
@import url(https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css);
@import url(https://fonts.googleapis.com/icon?family=Material+Icons);
@import url(https://fonts.googleapis.com/icon?family=Montserrat:100,400);

:root {
  font-size: 62.5%;
  body {
    margin: 0;
    // Body font size 16px
    font-size: 1.6rem;
  }
}


#header {
 background: url("https://raw.githubusercontent.com/therbootcamp/I2R_2020Aug/master/src/img/background_narrow.jpeg");
 background-size: cover;
 color: white;
 padding: 30px 22% 70px 22%;
 margin-left: calc(-50vw + 50%);
 margin-right: calc(-50vw + 50%);
 margin-top: -20px;
 font-family: 'Montserrat';

}

#header h1 {
 font-weight: 700;
 font-size: 4.4rem;
 margin-bottom: .3em;
}

#header h1, h2, h3, h4, h5, font {
 color: white;
}

#header a {
 color: white;
}

#header i, #header a {
  font-size: 2rem;
  text-decoration: none;
  padding-right: 3px;
}

@media (min-width: 480px) {
  #header h1 {font-size: 4.8rem;}
}

@media (min-width: 768px) {
  #header h1 {font-size: 5.6rem;}
}

@media (min-width: 992px) {
  #header h1 {font-size: 6.4rem;}

}

@media (min-width: 1200px) {
  #header h1 {font-size: 7rem;}
}

h1, h2, h3, h4, h5 {
  font-family: Montserrat;
  color: #212529;
  font-weight: 400;
}

h1 {
  font-size: 5rem;
}

h2 {
  padding-top: 20px;
  font-size: 2.4rem;
}

.my-table {
  font-size:2rem;
  font-family: Montserrat;
  border-spacing: 8px 4px;
  line-height: 1.2;
  margin-top: 20px;
  margin-bottom: 20px;
  }

.my-table .time {
  font-size:.7em;
  font-weight:100;
  text-align: right;
  vertical-align: top;
  padding: 6px 0px 6px 0px;
  }

.my-table td {
  font-weight:100;
  vertical-align: top;
  padding: 6px 0px 6px 6px;
  border-radius:8px;
  height: 40px;
  }

.my-table img {
  height: 20px;
}

.td-special {
  font-weight:100;
  font-style: italic;
}

.td-special-blue {
  font-weight:100;
  font-style: italic;
  background-color:#7FBDF7;
  color:#ffffff;
}

.td-special-grey {
  font-weight:100;
  font-style: italic;
  background-color:#DDDEE0;
  color:#000000;
}

.td-red {
  background-color:#F8716F;
  color:#ffffff;
}

.td-grey {
  background-color:#626870;
  color:#ffffff;
}

a {
  text-decoration: none;
}

.zoom {
  border-spacing: 8px 4px;
}

.zoom td {
  border-radius:8px;
  min-width: 260px;
}

.zoom a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 2rem;
  font-weight: 100;
  font-family: Montserrat;
}

.cont {
        font-weight:400;
	font-size:10px;
	line-height: 1.1;
    margin-top: 4px;
}

.sub {font-weight:400;}
e {font-weight: 100;}
r {color: #FF3A2A;}

.my-table a {
  color: white;
  font-weight: 100;
  }

.my-table a:hover {
  color: white;
}

el {
  font-size: .8em;
}

.downloads h4 {
  font-weight: 400;
  margin-bottom: 4px;
  }

.downloads .active {
  color: #626870;
}
.downloads .inactive {
  color: #DDDEE0;
}

.courses td {
  padding-bottom: 20px;
  padding-top: 20px;
}

.courses h4 {
  font-weight: 400;
  margin-bottom: 11px;
  }

.course-img {
  max-width: 120px;
  border-radius: 50%;
  border: 7px solid #e9ecef;
}

.literature td {
  padding-bottom: 20px;
  padding-top: 20px;
}

.literature h4 {
  font-weight: 400;
  margin-bottom: 11px;
  }

.literature-img {
  max-height: 150px;
  border: 2px solid #e9ecef;
}


.details td {
  font-family: Montserrat;
  color: #212529;
  font-weight: 400;
  margin-bottom: 11px;
  }