CSS Section of Website

@import url('https://fonts.googleapis.com/css?family=Pacifico');
@import url('https://fonts.googleapis.com/css?family=Oswald');
@import url('https://fonts.googleapis.com/css?family=Nunito');

H1 {
    font-family: 'MyWebFont', Pacifico;
  color: #44caff;
  text-align: center;
}
H2 {
    font-family: 'MyWebFont', Oswald;
  color: #ededed;
  text-align: center;
}
H3 {
    font-family: 'MyWebFont', Oswald;
  color: #1c1c1c;
  text-align: center;
}
H4 {
    font-family: 'MyWebFont', Nunito;
  color: #141414;
  text-align: center;
}

.tab {
    overflow: hidden;
    border: 5px solid #2d2d2d;
    background-color: #f1f1f1;
}

/* Style the buttons that are used to open the tab content */
.tab button {
    background-color: 51f0ff;
    float: left;
    border: none;
    outline: none;
    cursor: pointer;
    padding: 14px 16px;
    transition: 0.3s;
  border-radius: 15px;
}

/* Change background color of buttons on hover */
.tab button:hover {
    background-color: #3dbfcc;
}

/* Create an active/current tablink class */
.tab button.active {
    background-color: #339ba5;
}

/* Style the tab content */
.tabcontent {
    display: none;
    padding: 12px 18px;
    border: 5px solid #2d2d2d;
    border-top: none;
}
body{
background: linear-gradient( #303030, #3dd8ff);
  font-family: "Oswald",
    text-align: center;
}
.tabcontent {
    animation: fadeEffect 1s;
}
/* Go from zero to full opacity */
@keyframes fadeEffect {
    from {opacity: 0;}
    to {opacity: 1;}
}