body {
    background-color: gray;
}

p {
    font-weight: 500;   
    margin-left: 10px; 
    margin-right: 10px;
    margin-top: 10px;
    margin-bottom: 10px;
    font-family: Sans-serif;
    line-height: 1.4;
}

h1 {
    font-weight: 500;   
    margin-left: 10px; 
    margin-right: 10px;
    margin-top: 10px;
    margin-bottom: 10px;
    font-family: Sans-serif;
    line-height: 1.4;
}

h2 {
    font-weight: 500;   
    margin-left: 10px; 
    margin-right: 10px;
    margin-top: 10px;
    margin-bottom: 10px;
    font-family: Sans-serif;
    line-height: 1.4;
}

#header_section {
    background-color: #3333A2;
    padding-top: 10px;
    padding-bottom: 10px;
}

#header_section > h1 {
    color: white;
    text-align: center;
}

#content_section {
    background-color: lightgrey;
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 90%;
}

#back_button {
    display: block;
    width: 15%;
    margin-left: auto;
    margin-right: auto;
    text-decoration: none;
}
#back_button > p {
    text-align: center;
    font-size: 20px;
    padding: 10px;
    background-color: orange;
    width: 100%;
}


#back_button > p:hover {
    color: white;
    background-color: purple;
}

#link_section {
    width: 50%;
    margin-left: auto;
    margin-right: auto;
}

#link_section > a {
    display: block;
    text-decoration: none;
    color: black;
    font-size: 20px;
    padding-top: 10px;
    padding-bottom: 10px;
    text-align: center;
}