#star-table td,
#star-table th {
    border: 1px solid;
    width: 20%;
    text-align: center;
}

#star-table {
    width: 100%;
    margin: 0 auto;
    border-collapse: collapse
}


#year-nav p {
    padding-top: 0px;
}

#year-nav ul {
    margin-top: 10px;
}

#year-nav li {
    display: inline-block;
    border: 2px black solid;
}

#year-nav a {
    color: black;
    text-decoration: none;
}

#year-nav li:hover {
    background-color: #F9F871;
}

#class-nav {
    width: 250px;
    margin: 0 auto;

}

ul {
    width: 100%;
    margin: 0 auto;
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

#star-ill-img {
    width: 60%;

}

#star-img {
    width: 80%;
}

select {
    display: none;
    font-size: 32px;
    text-align: center;
    width: 100px;
    height: 50px;
    background-color: #7FF5E3;
    color: yellow;
}


section.second table {
    margin: 0px auto;
    font-size: 30px;
}

section.second td,
section.second th {
    border: 1px solid;
    width: 20%;
    text-align: center;

}

section.second td:hover {
    background-color: yellow
}

section.second table a {
    text-decoration: none;
    color: black
}

section.second {
    text-align: center;
}

body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
ul {
margin: 0px;
padding: 0px;
;
}

header {
width: 100%;
background-color: #acddf2;
margin: 0px auto;
}

header>img {
display: block;
width: 50%;
height: 50%;
margin: 0px auto;
}

main {
margin-top: 0px;
background-image: url('../images/Background.png');
background-size: 100% 100%;
background-repeat: no-repeat;
background-attachment: fixed;
background-size: cover;
min-height: 100vh;
}

article {
width: 60%;
margin: 0px auto;
}

article>h1 {
font-size: 36px;
}

p {
font-weight: bold;
font-size: 25px;
padding-top: 30px;
}

section {
width: 60%;
margin: 0 auto;
padding-bottom: 30px;
}

section.second {
width: 60%;
margin: 30px auto 0px auto;
}

footer {
width: 100%;
height: 18px;
background-color: #7ccbea;
}


footer>span {
font-size: 8px;
float: right;
}

a.button {
display: block;
margin: 30px auto 0px auto;
padding: 30px;
width: 320px;
height: 42px;
font-size: 32px;
background-color: #F9F871;
border-radius: 15px;
cursor: pointer;
text-decoration: none;
text-align: center;
color: black;
}

a.button:hover {
background-color: #C0FD97;
}