* {box-sizing: border-box}

/* Set height of body and the document to 100% */
html, body, h1, h2, h3, h4, h5, h6 {
    font-family: "Roboto", sans-serif
}
/* Style tab links */
.tablink {
    background-color: white;
    color: #555;
    float: left;
    border: none;
    outline: none;
    cursor: pointer;
    padding: 14px 16px;
    font-size: 17px;
    width: 33.33%;
    text-align: center;
    text-decoration: none

}
{box-sizing: border-box}

.tablink:hover {
    background-color: #efecee;
}

/* Style the tab content (and add height:100% for full page content) */
.tabcontent {
    color: white;
    padding: 80px 0px;
    height: 100%;
}
@media screen and (max-width: 600px) {

nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
}
}