body{
    margin:0;
    line-height:1.5;
    font-size: 18px;
    background-color: #222;
    font-family: sans-serif;
}

.content {
    margin: 0px auto;
    padding: 20px 40px;
    width: 750px;
    background-color: #ffffff;
    border: silver ridge 3px;
}

@media (max-width: 836px) {   
    .content {
        padding: 20px 5vw;
        width: 90vw;
        border-left: 0;
        border-right: 0;
    }

    header {
        border-left: 0;
        border-right: 0;
    }
}
  
    
h1,h2,h3{
    line-height:1.2;
}

li {
    padding-bottom: 0.5em;
}

header {
    margin:2px auto;
    padding: 0px 40px;
    max-width: 750px;
    border: silver ridge 3px;
    font-size: 2em;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-weight: 900;
    color: white;
    text-shadow: 
        0px 0px 5px #000;
    background: linear-gradient(
        90deg, 
        rgb(255,0,0) 0%, 
        rgb(77,12,12) 100%
        );
}

footer {
    padding: 0px 40px;
    text-align: center;
    margin:2px auto;
    max-width: 750px;
}

.crossed {
    text-decoration: line-through;
}

table {
    border-collapse: collapse;
}
th {
    border: 1px solid black;
    border-bottom: 3px double black;
    background-color: #eee;
    padding: 2px 10px;
}
td {
    border: 1px solid black;
    padding: 0px 10px;
}