html {
    font-family: Segoe UI;
}
.sidenav {
    height: 100%;
    width: 0;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    background-color: #191919;
    overflow-x: hidden;
    transition: 0.5s;
    padding-top: 60px;
}
.sidenav a {
    padding: 8px 8px 8px 32px;
    text-decoration: none;
    font-size: 25px;
    color: #818181;
    display: block;
    transition: 0.3s;
}
.sidenav a:hover {
    color: #f1f1f1;
}
.sidenav .closebtn {
    position: absolute;
    top: 0;
    right: 25px;
    font-size: 36px;
    margin-left: 50px;
}
@media screen and (max-height: 450px) {
    .sidenav {padding-top: 15px;}
    .sidenav a {font-size: 18px;}
}
.sidenavImage{
    height: 12%;
    padding-left: 4%;
    margin-left: auto;
    margin-right: auto;
}
.sidenavText{
    color: white;
    text-align: center;
    text-decoration: none;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
}
.btn {
    font-family: Segoe UI;
    font-weight: bold;
    display: block;
}

h2 {
    text-align: center;
    font-size: 2rem;
    margin: 0;
}

h4 {
    text-align: center;
    font-weight: 200;
    margin: 5px 0 25px 0;
}

input {
    font-family: Segoe UI;
    text-align: center;
    display: block;
    border: 1px solid #345;
    color: #333;
}

header {
    display: grid;
    grid-template-columns: 3fr 1fr 1fr;
    height: 120px;
    margin: 0 20% 0 20%;
}

#errorwindow {
    margin: 0;
    color: rgb(117, 19, 19);
}

main {
    margin: 0 20% 0 20%;
}

.mainwrapper {
    text-decoration: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.list {
    text-align: left;
    float: left;
    margin-top: 50px;
    margin-left: 9%;
}

#avarage {
    font-weight: bold;
}

#lowgrade {
    color: rgb(117, 19, 19);
}

body {
    background-color: #e8b1a5;
  }