body {
    background-color: white;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS';
    text-align: center;
    font-size: 25px;
    color: #693300;
    
}
.topbar {
    text-align: left;
    font-size: 30px;
    padding: 0px;
    margin: 7px;
}
nav {
    background-color: #fff26e;
    height: 46px;
    font-size: 40px;
    padding: 10px;

    
}
.navbar {
    background-color: #fffbcf;
    padding: 10px;
    text-decoration: none;
    border-right:2px solid white;
    border-left:2px solid white;
    color: #693300;
    margin-top: 15px;
}

.demo {
    text-align: center;
}
figcaption {
    font-size: 15px;
    margin-bottom: 5px;
}
#first_two {
    display: inline-block;
}
#second_two {
    display: inline-block;
}
details {
    background-color: #fff26e;
    padding: 10px;
}
.rules {
    display: block;
    margin: auto;
    margin-bottom: 50px;
    background-color: white;
    height: 400px;
    inline-size: 70%;
    width: 80%;
    padding-top: 25px;
    
}
/* use padding*/
summary {
    background-color: white;
    width: 50%;
    height: 70px;
    display: block;
    margin: auto;
    margin-top: 25px;
    margin-bottom: 25px;

    display: flex;
    align-items: center;
    justify-content: center;
}
a {
    color: #059800;
}
a:hover {
    color: #28da25;
}

#logo {
    font-size: 40px;
}
hr {
    color: #693300;
}

b.txt_style1 {
    text-decoration-line: underline;
    text-decoration-style: wavy; 
}
b.txt_style2 {
    text-decoration-line: underline;
    text-decoration-style: double;
}
b.txt_style3 {
    text-decoration-line: underline;
    text-decoration-color: red;  
    text-decoration-style: wavy;  
}