*{
box-sizing: border-box;
}

header{
    color: black;
    text-align: center;
    border-style: double;
    border-width: 10px;
    border-color: LightSlateGray;
    background-size: 100% 100%;
    font-size: 30px;
    background-color: White;

}

html{
    height: 100%
}

body{
    background-image: linear-gradient(#d1d6dc, White);
    min-height: 100%;
}

h4 {
    font-size: 20px;
    font-weight: normal;
    background-color: LightSlateGray;
    color: White;
    border-style: double;
    padding: 10px;
    border-color: LightSlateGray;
}

.topnav {
    overflow: hidden;
    background-color: LightSlateGray;
}

.topnav a {
    float: left;
    color: White;
    text-align: center;
    text-decoration: none;
    padding: 15px 20px;
    font-size: 20px;
}

.topnav a:hover {
    background-color: #d1d6dc;
    color: black;
}

.topnav a.active {
    background-color: #d1d6dc;
    color: black;
}

section {
    height: 100%;
}

.nav1 {
    float: left;
    width: 30%;
    padding: 20px;
}

.navHome, .navResearch, .navContact {
    float: left;
    width: 50%;
    padding: 20px;
}

.researchBody {
    width: 100%;
    padding: 20px;
}

.teachingBody {
    border-style: solid;
    border-color: LightSlateGray;
    padding: 20px;
}
    
.image1 {
    float: left;
    border-radius: 4px;
    max-width: 80%;
    padding: 10px;
    height: auto;
}

.imageHome {
    float: center;
    border-radius: 4px;
    min-width: 100%;
    height: auto;
    border-style: solid;
    border-color: LightSlateGray;
}

.nav2 {
    float: left;
    width: 50%;
    padding: 20px;
}

article {
    float: left;
    width: 40%;
    padding: 20px;
    overflow: auto;
}

section:after{
content: "";
clear: both;
display: table;
}

footer {
    left: 0;
    width: 100%;
    position: fixed;
    background-color: LightSlateGray;
    text-align: center;
    padding: 10px;
    color: white;
    bottom: 0;
}